You Are Sent…To Do What?

Acts 28:30-31 July 28, 2024 Pastor Ricky Alcantar
Thesis We are ambassadors for Christ and the church is our embassy, called to establish outposts of Christ's kingdom through generous hospitality and unapologetic proclamation wherever God has placed us.
Series
Cross of Grace Culture
Type
Textual
Tone
pastoraldidacticprophetic
Method
grammatical-historicalredemptive-historicalapplicatory
What's in this sermon

The shape of the argument

22 units across exposition, application, illustration, theological claim, and conclusion. The pastor's argument is built from these moving parts.

Pastoral correction · unit #19
"Alcantar applies ambassadorial identity to specific life contexts: parenting, work, coaching, marriage. The identity transforms ordinary tasks into kingdom representation. What was survival becomes mission; career confusion becomes strategic positioning for the kingdom."
Doctrinal loci· 8 surfaced
Ecclesiology · 16 Pastoral Theology · 4 Providence / Sovereignty · 3 Ethics / Moral Theology · 2 Bibliology · 1 Christology · 1 Soteriology · 1 Spiritual Warfare · 1
Bible citations· 9
Acts 28:30-31 | Jeremiah 29:7 | 1 John 2 | 1 Thessalonians | Acts 1 | 2 Corinthians 5:20 | 1 Corinthians 15
Illustrations· 3
  1. cultural reference · unit #3 — Extended movie illustration establishing the central metaphor of the sermon: life requires a flag to aim for. The coach's question—what do you want?—sets up the congregation's need for clarity about mission.
  2. personal story · unit #11 — Extended personal illustration using a consular officer couple from the church who served in Ciudad Juarez. Alcantar unpacks three lessons: ambassadors represent their country 24/7 (not just at work), embassy grounds are sovereign territory of the home country, and good ambassadors love the city they're in. The illustration makes abstract ambassadorial identity concrete and relatable.
  3. personal story · unit #20 — Alcantar returns to the consular officer illustration, focusing on the commission plaque. The physical reminder of presidential authority transformed how the officer worked and lived—every email, every street interaction carried the weight of representing the nation. The story sets up the parallel to Christian commission.
Theological claims· 8
  1. We are ambassadors for Christ and the church is our embassy—this is the controlling identity that gives life direction. unit #4
  2. Acts' ending invites the church into ongoing participation in God's mission, synthesizing all four cultural postures in Paul's paradigm of faithful presence. unit #8
  3. To be an ambassador is to operate as a representative of a higher authority, bringing that ruler's message with the expectation of response—exactly what Paul does in Rome. unit #10
  4. Paul's house arrest is the establishment of an embassy of Christ's kingdom in the heart of Rome—making Acts' ending a triumph, not a defeat. unit #12
  5. God's sovereign missional strategy is to speak his word of reconciliation through human ambassadors, not through impersonal means. unit #13
  6. Ambassadors should expect costly opposition and providential opportunities to co-exist, with God sovereignly turning opposition into gospel platforms. unit #15
  7. Ambassadors are not of the city but are in the heart of the city—maintaining distinct identity while remaining fully present and engaged. unit #16
  8. Ambassadors hold generous hospitality and unapologetic boldness in tension—welcoming all while never compromising the gospel message. unit #17
Quotations· 8
"life is like golf in that. That you have to have something you're aiming for. You got to have a flag you're aiming for." — Coach in golf movie (unit #3)
"what do you want? Like, what do you want out of life?" — Coach in golf movie (unit #3)
"America's relationship with Christianity has gone from generally positive to generally neutral to, lately, in the last ten years, generally negative, especially from cultural quarters." — Aaron Wren (unit #5)
"acts is intentionally open ended, inviting our participation in God's mission." — Justin Holcomb (unit #8)
"Luke ends his account on a note of triumph, showing Paul in the capital of the world as he preaches the gospel without hindrance to all who will hear it. In its early form, Jesus has fulfilled his promise. From acts one, the message of salvation has begun to reach the end of the earth. And because God has proven faithful to bring his gospel to Rome, we can trust that he will continue to spread it abroad." — Justin Holcomb (unit #8)
"inviting our participation in God's mission as he overcomes opposition to bring his word of forgiveness to all people. The gospel of Jesus Christ goes from Jerusalem to the ends of the earth, not without trouble, but without hindrance. God's purposes will have their way. The book of acts tells the story of Jesus building his church by his grace and gives us confidence that he will continue to build it until he returns." — Justin Holcomb (unit #8)
"To be an ambassador is to operate as a representative on behalf of a higher authority, bringing that ruler's message on that ruler's authority and justly expecting a response as if the ruler himself were present. This is what legates would have done on behalf of the emperor in Paul's day, and it is what national ambassadors do in today's world. And this is what bearers of the gospel do on Christ's behalf." — Dane Ortland (unit #10)
"God is speaking his word of reconciliation to the world, and he does so not through a heavenly loudspeaker or microphone, but through another channel, us." — Dane Ortland (unit #13)
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Full transcript

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0 · Alcantar introduces the sermon series on Cross of Grace culture and surfaces the controlling question: Christians are sent, but sent to do what? He uses light humor to acknowledge common Sunday afternoon plans before focusing the congregation on the sermon's core inquiry

Acts chapter 28. We are starting a series on cross of grace culture. Every home has a culture. Every office has a culture. Every city has a culture. Every college campus has a culture. And the only question is whether people are intentional about shaping the culture that they have around them or not. And so we want to be intentional at Cross of grace with shaping our culture. And we're going to start with the area of mission. Now, one of the things we do at Cross of Grace is we end every service saying, you are what you are sent. Now, here's the reality, though. We must ask the question. To do what? Right? Some of you are just excited to go eat lunch. We're sent to eat lunch. Amen. Right? Or you're sent to watch the cowboys lose again. That's some of my bitterness coming out. I'm a cowboys fan. But it's. Yeah, I'm not excited. What are we set to do? That is the question today.

1 · Alcantar reads the primary text twice, emphasizing the public reading of Scripture and Paul's two years of welcoming, proclaiming, and teaching in Rome

And that is what we're going to answer using just two verses in acts 28, 30 and 31, the last verses of the entire book. Let's read these together. And remember, this is God's very word. Verse 30. Paul lived there two whole years at his own expense and welcomed all who came to him, proclaiming the kingdom of God and teaching about the Lord Jesus Christ with all boldness and without hindrance. This. Sorry. He lived there two years at his own expense and welcomed all who came to him, proclaiming the kingdom of God and teaching about the Lord Jesus Christ. Right. With all boldness and without hindrance. This is God's word.

2 · Brief invocation asking for God's blessing on the sermon

And lord, I pray you, bless the preaching of it today. Amen.

3 · Extended movie illustration establishing the central metaphor of the sermon: life requires a flag to aim for

Well, recently I saw a movie that my dad recommended about golf. I don't usually watch a lot of movies about golf. I'm not a big golf guy, but he recommended this movie, and it was really good. It was about a guy in Del Rio, teacher in Del Rio, trying to start a golf team post World War Two. And in the movie, the coach has a conversation with an, an angry young man he's trying to recruit to the golf team. But this angry young man has no direction in life. He's just mad at everything. He's kind of rebuffing everything. And so the coach gets in his face and says, man, what do you want? Like, what do you want out of life? 510, 20 years from now, what do you want out of life? And the coach explains to him that life is like golf in that. That you have to have something you're aiming for. You got to have a flag you're aiming for. There are times in life you're going to end up on a sunny day with beautiful grass underneath your feet. And other times in life, you're going to end up with a shot in the rough or there's going to be wind and rain around you. But the thing that helps is you have to have a flag that you are aiming your life toward. What do you want? Is what he's pushing him to think about now, by the end of the movie, redemptively, that God does find something to aim for.

4 · Alcantar diagnoses the congregation's felt need—life without clear direction—and declares the sermon's thesis up front: we are ambassadors for Christ and the church is our embassy

But I think many of us, more of us probably than we want to admit, need that conversation in our lives. What are we aiming for? In the blur of clocking into work or dropping the kids off at practice, or responding to texts or watching the latest Netflix show or thinking about a career change. What is it that we are aiming for? Because I think for most of us, life can feel like a game of golf, except that we play it in the dark without being able to see the flag. And there's always a golf marshal called time yelling at us, saying, hurry up. Right. That is at least what life feels like to me often. So that is where acts 28, 30, and 31 drop into our lives. This text will replant the flag of what we are aiming for today, if we will let it. And so here's the flag. I'm gonna give it to you up front. Here's the flag. We are ambassadors for Christ. That is what we're aiming for. We are ambassadors for Christ, and the church is our embassy.

5 · Alcantar names three forces obscuring the flag Christians should aim for: opposition (cultural hostility to Christianity), seduction (materialism, sexuality, individualism pulling Christians away), and deception (false teachers twisting Scripture to affirm whatever the listener wants to hear)

Now, I'm gonna ask four questions today. The first one, I'll be brief, but I think this is really introducing our series. So four brief questions. One, why is it so hard to see the flag? Why is it in life, it's so difficult to see what we're aiming toward? Well, there are three forces pushing on the early church in the book of acts, and that we see from acts all the way to revelation, these three forces pushing on the church that you could use the language of golf, creating these giant sand traps or water hazards in our way. And here is what they are. First, there is opposition. There is the rough. There are trees in our way. Paul was opposed in this text under house arrest. And although most of us are not under house arrest, we, too, face opposition. The church will always face opposition, and does today. Author Aaron Wren points out that America's relationship with Christianity has gone from generally positive to generally neutral to, lately, in the last ten years, generally negative, especially from cultural quarters. And this has been rapid and jarring if you've lived through it. It's affected everything from LGBTQ issues to cultural issues. For example, just looking at LGBTQ issues in particular, look at the transformation over a short period of time between candidate or Senator Obama and President Obama's later policies. Space of 1015 years. Right. You begin to see there is a concerted change in a sea change, in a sense, in culture. And it affects everything from what's available on Netflix to social media to even recently at the Olympics, at the Olympic ceremony, having what is essentially a mockery of the last supper during the Olympic ceremonies. Right. We live in a very different culture than we did 40 years ago. That's one of the reasons it's hard to see the flag. Second, it's hard to see the flag because of seduction. Now, Paul was in the heart of the roman empire. He was a roman citizen. There was enormous pressure on him to just cave in, to just agree with Rome's perspective, to be a good, loyal citizen. And if he did, by the way, he would have had a whole lot, right? He has all the privileges of roman citizen. He has a high education. He's a sharp guy, he's a great thinker. He could have made his mark on Rome. He could likely feel that pull in the city of Rome. And that is where we too face seduction. There's the seduction of materialism that if you just have more, earn more, you'll be fulfilled. There's seduction of sexuality. If you experience more, give in to more, swipe right more, you'll feel satisfied. There's the seduction of radical individualism that if you can just express yourself better through your identity and your job and your hobbies and your clothes, then you'll feel fulfilled and whole. That pull of the culture affects all of us. And then thrown into the mixed third movement deception. It's another reason it's hard to see the flag, because false teaching was rampant in the early church and it is continuing to be rampant now. Look, the reality is if you go on YouTube this afternoon and you want to find a quote unquote christian teacher that agrees with exactly what you think, you can find them. You can find somebody who tells you exactly what you want to hear. If you want to be pro gay or pro trad wife or pro liberal or pro conservative or pro environment or pro alpha male, you can find a teacher holding the Bible telling you, yep, that's right. That's one of the reasons it's so difficult. One of the reasons it's hard to see the flag, because you won't realize that you're getting opposed and bowing to the opposition. You won't realize that you're getting seduced and being drugged away because you feel like, oh, well, if he has a Bible and he gave me a verse, it must be true.

Where this fits

Recent preaching context

The three sermons immediately preceding this one in the preaching schedule.

Jun 16, 2024
Biblical manhood is defined by God's creational design and perfectly modeled in Jesus Christ, calling men to reject passivity, accept responsibility, lead courageously, and expect eternal reward.
1 Corinthians 16:13
Jun 30, 2024
Because Jesus rose from the dead and conquered death, all who are united to him will likewise be raised with glorified, imperishable bodies, a hope that makes Christians steadfast in the face of death and devoted to eternal work.
1 Corinthians 15:35-58
Jul 21, 2024
Jesus Christ is the final, authoritative word over all creation, history, and human life—speaking as Prophet, ruling as King, and saving as Priest—and Christians must orient their lives around this reality rather than the endless swirl of cultural opinions and political anxieties.
Hebrews 1:1-4
July 28 · This sermon
You Are Sent…To Do What?
We are ambassadors for Christ and the church is our embassy, called to establish outposts of Christ's kingdom through generous hospitality and unapologetic proclamation wherever God has placed us.
Acts 28:30-31
Take it further

Discuss · apply · pray

Small-group discussion

6 questions for your group this week

  1. Read Acts 28:30-31 aloud together. What do you notice about how Luke describes Paul's final years—what is he doing, and what tone does the ending carry?
    Acts 28:30-31
    → Does this feel like a victory or a defeat to you? Why might Luke end his gospel account this way rather than with Paul's martyrdom?
  2. Ricky described Paul's house arrest as the establishment of an 'embassy of Christ's kingdom in the heart of Rome.' What do you think he meant by that, and how does that image change the way you read Paul's final chapter?
  3. According to 2 Corinthians 5:20, we are 'ambassadors for Christ.' What does it mean to be an ambassador, and how is that different from being a missionary, a witness, or a believer just trying to live a good life?
    2 Corinthians 5:20
    → Where in your own life do you already operate as an ambassador without thinking of it that way?
  4. Ricky said Paul held two things in tension: generous hospitality and unapologetic boldness about the gospel. Can you think of a time when you've felt the pull between welcoming people as they are and speaking truth about Christ? What happened?
    → How might Paul's example in Rome help you navigate that tension differently?
  5. Look at Jeremiah 29:7, where God tells the exiles to 'seek the welfare of the city where I have sent you.' How does that command connect to what it means to be an ambassador in your neighborhood, your workplace, or your school right now?
    Jeremiah 29:7
    → What would it look like to 'seek the welfare' of your city while remaining ambassadors for Christ—not conquered by it, not separated from it, but genuinely engaged?
  6. If the church is our 'embassy'—the outpost of Christ's kingdom in a foreign land—what does that mean about who belongs in our church gatherings, how we treat one another, and how we welcome people who don't yet know Jesus?
Draft · pending review
Daily readings · Monday–Friday

5-day reading plan

This week we follow Paul's embassy of Christ in Rome through five cross-references, learning what it means to be ambassadors sent into our own cities—welcomed, opposed, and sovereignly placed.

Monday 2 Corinthians 5:20

Paul writes directly: 'We are ambassadors for Christ, as though God were making his appeal through us.' This is not a title we earn or a role we choose—it is our identity the moment we trust Christ. Everything we do this week—at work, at home, in our neighborhood—flows from this single reality: we represent a King and carry his message to the people around us.

Tuesday Jeremiah 29:7

Jeremiah tells the exiles in Babylon: 'Seek the welfare of the city where I have sent you, and pray to the Lord on its behalf.' This is the paradox of ambassadorial life. We are foreigners here, citizens of another kingdom, yet we are called to *deeply love and serve* the city God has placed us in. We do not separate from our culture or pretend to be of it—we are fully present with our eyes fixed on a higher King.

Wednesday 1 Thessalonians 5:9-10

Paul tells the Thessalonians that Christ died for us 'so that whether we are awake or asleep we might live with him.' God does not announce salvation through angels or silence—he announces it through *people*, through ambassadors like Paul in Rome and like us in our neighborhoods. Our presence, our words, our hospitality are the very instruments God uses to draw people to himself. This makes our ordinary life the vehicle of his extraordinary mission.

Thursday Acts 1

Acts begins with the Ascension and the apostles' question: 'Lord, will you at this time restore the kingdom to Israel?' Jesus answers with the Great Commission. Acts 28 closes with Paul doing exactly that—proclaiming Christ boldly in Rome. The book does not end because the mission ends; it ends because *the church continues it*. We are not waiting for God to finish his work in the world. We are the embassy through which he continues it.

Friday 1 John 2:15-17

John warns against loving the world's systems while calling us to love people in the world. This is the ambassador's tension: Paul welcomed everyone to his house arrest and spoke 'quite openly' about Jesus. He did not separate from Rome or soft-pedal the gospel. He loved his city by telling it the truth about its King. This week, ask yourself: where am I called to welcome people generously *and* speak the gospel unapologetically in the same breath?

Draft · pending review
Pray together this week

Prayer of Ambassadors

Father, we come before you as a people sent. We thank you that you have not left us orphaned in this world, but have given us an identity that transcends our circumstances and our fears. You have called us ambassadors for Christ, representatives of a King whose kingdom is not of this world, yet whose reign touches every sphere where we live and work and love. We adore you for this dignity—that you would entrust your message of reconciliation to broken people like us.

Yet we confess, Father, that we often forget who we are. We retreat when we should stand. We silence our witness when we should speak boldly. We treat our homes, our workplaces, our neighborhoods as places merely to survive or succeed, rather than as embassies of your kingdom. We segregate ourselves from those around us, or we assimilate so fully that no one knows whose ambassador we are. Forgive us for squandering the privilege of being your representatives in the places you have set us.

We thank you that Christ has already secured our mission. By his death and resurrection, he has reconciled us to you and commissioned us to carry that word of reconciliation everywhere we go. As Paul proclaimed boldly from his house arrest in Rome, so we are free to proclaim boldly from our homes, our schools, our offices, our neighborhoods—not because the world will welcome us, but because our King has already overcome the world. Give us courage, Father, to speak his name unapologetically, and tenderness to welcome all who come through our doors.

We ask you, by your Spirit, to transform how we see every sphere of our lives. Let our parenting be ambassadorial. Let our work be ambassadorial. Let our marriages be embassies where your kingdom breaks in. Where we face opposition, remind us that you are sovereign and turn even our suffering into gospel platforms. Where we find open doors, give us wisdom to welcome generously without compromising the truth of who we represent. Make us faithful in our posting, Lord, neither fleeing the city nor becoming indistinguishable from it.

May we go this week knowing we are not of this world, yet sent fully into it. By your grace, make us ambassadors worthy of our King.

Draft · pending review
Sunday-evening family table

What Kind of Ambassador Are You?

For the parent

Paul was under house arrest in Rome, but he didn't hide or fight back—he opened his home and spoke boldly about Jesus. This prompt invites your family to think about what it means to represent Jesus right where you live. Listen for how your kids understand 'representing'—they may surprise you with concrete examples.

In the sermon, Ricky said Paul was like an ambassador for Jesus, right there in his house in Rome. An ambassador represents their king to people in a foreign land. So here's the question: Who are the people around us—at school, at work, in our neighborhood—who need to see and hear about Jesus? And what's one way we could be like Paul and represent Jesus to them this week without being afraid?
Works for ages 8+. Younger kids (5-7) can listen and share one person they know; older kids will engage with the 'how to represent' piece more deeply.
Draft · pending review
Couples · three questions over coffee

Ambassadors Together: What Are We Sent to Do?

  1. What sphere of life—parenting, work, marriage, friendships—did the sermon make you see differently as a place where you're representing Christ's kingdom?
  2. Where do we, as a couple, need to hold generous hospitality and unapologetic boldness in better tension—and where are we leaning too far one direction?
  3. Who is one person in our circles right now that we could invite into our home or our lives as an act of ambassadorial presence, and how can we pray for boldness to speak Christ's name there?
Draft · pending review
Memory verse this week

2 Corinthians 5:20

Therefore, we are ambassadors for Christ, God making his appeal through us. We implore you on behalf of Christ, be reconciled to God.

Why this verse: This verse is the theological anchor for the sermon's controlling identity claim: we are ambassadors for Christ and the church is our embassy. Ricky uses Paul's definition of ambassadorial mission—representative authority, proclamation, and appeal for reconciliation—as the exact paradigm that Acts 28:30-31 demonstrates in practice, making this the essential verse to carry forward into daily life.

Draft · pending review
Where this was preached

About the church

Cross of Grace Church
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# Cross of Grace Church

A church preaching expository sermons through the books of the Bible.

## Sermons
- [What Is a Real Man? (1 Corinthians 16:13, 2024-06-16)](/CoGElPaso/sermons/2024/06/what-is-a-real-man)
- [How Do We Face Death? (1 Corinthians 15:35-58, 2024-06-30)](/CoGElPaso/sermons/2024/06/how-do-we-face-death)
- [The Final Word (Hebrews 1:1-4, 2024-07-21)](/CoGElPaso/sermons/2024/07/the-final-word)
- [You Are Sent…To Do What? (Acts 28:30-31, 2024-07-28)](/CoGElPaso/sermons/2024/07/you-are-sent-to-do-what)

## About
- [About the church](/about)
- [Plan a visit](/visit)

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