Guerrilla Christianity

In this Pentecost message, Pastor R. Bret Walker explores what it truly means to be a Spirit‑filled church. Drawing from Acts 2, he highlights six marks of a vibrant congregation: a praying church, a witnessing church, a sent church, a persecuted church, a preaching church, and a baptizing church. Pastor Walker challenges listeners to embrace the work of the Holy Spirit—uniting in prayer, boldly sharing Christ, discipling new believers, and carrying the gospel beyond the church walls. The Spirit that filled the early church is the same Spirit empowering believers today to reach the lost and glorify God.

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In this penultimate message of the Easter series The Early Church: Lessons from the Book of Acts, Pastor R. Bret Walker explores the Ascension and the calling of the church to be a sent people. Drawing from Acts 1:1–11, he highlights Jesus’ command to wait for the Holy Spirit, the power given to believers, and the mission to witness in ever‑widening circles—Jerusalem, Judea, Samaria, and the ends of the earth. Like the disciples, we are not called to stand still, but to go. Empowered by the Spirit, the sent church proclaims Christ to a world in need.

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In this message, Pastor R. Bret Walker explores Paul’s sermon at the Areopagus (Acts 17:22–31) as a model for evangelism in a skeptical world. Paul begins with common ground, acknowledges the Athenians’ spiritual searching, and reveals the “unknown God” as the Creator who calls all people to repentance. Pastor Walker challenges believers to recover the courage and clarity of the early church—a preaching church that shared the gospel with wisdom, calmness, and conviction. Though few believed Paul that day, the seeds he planted transformed Athens. We are called to do the same.

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In this message, Pastor R. Bret Walker reflects on the reality of the persecuted church, drawing from Stephen’s martyrdom in Acts 7. Stephen, “full of the Holy Spirit, gazed into heaven and saw… Jesus standing at the right hand of God,” even forgiving his executioners as he died. The sermon highlights how persecution has historically strengthened the church, noting that “almost 400 million Christians worldwide face persecution or violence” today. Like Stephen, believers are called to stand faithfully for Christ, trusting that when we stand for Jesus, He stands for us, and continuing the mission despite opposition.

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In this message, Pastor R. Bret Walker explores what made the early believers in Acts 2 a truly united church. They “devoted themselves to the apostles’ teaching… the fellowship… the breaking of bread and the prayers,” a pattern that shaped their shared life and mission. Their generosity, joy, worship, and mutual care led to “favor with all the people,” and as a result, “the Lord added to their number day by day those who were being saved.” The sermon challenges today’s church to reclaim this unity through teaching, fellowship, prayer, generosity, and praise.

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Guerrilla Christianity – “The Baptizing Church” Pastor R. Bret Walker explores Acts 2 and the early church’s explosive growth as a baptizing church. Peter’s call to “Repent and be baptized… for the forgiveness of your sins” becomes the heart of the message, showing baptism as a means of grace and a sign of God’s claim on his people. The sermon urges believers to embrace repentance, proclaim Christ boldly, and invite others into the life of faith. As Bret reminds us, the promise is “for you and for your children and for all who are far off,” and the mission continues today.

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Pastor R. Bret Walker launches a new series, The Early Church: Lessons from the Book of Acts, by exploring Acts 2 and the bold witness of Peter at Pentecost. This episode, The Witnessing Church, calls believers to embrace the same Spirit‑empowered mission: proclaiming what Christ has done, sharing personal testimony, and moving from merely welcoming to actively inviting others to faith. The early church grew through courageous witness — and we are called to do the same today.

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On Easter Sunday, Pastor R. Bret Walker concludes the “Letters from God” series with Colossians 3:1–4, urging believers to live from the reality that they have been raised with Christ. Paul’s “if” is better understood as “since”—a call to seek what is above, not the fading pursuits of earth. The sermon contrasts temporary treasures with the eternal satisfaction found only in God, reminding us that our lives are “hidden with Christ” and secured by His resurrection. Because Christ is our life, we live with hope: He is risen, and He will return in glory.

In this Easter Sunrise sermon on John 20:1–18, we stand with Mary, Peter, and John at the empty tomb and hear the risen Jesus speak Mary’s name. The resurrection is more than a temporary revival—it is Christ’s victory over sin and death and the promise of everlasting life. Because Jesus lives today, our faith is not in vain, and the grave will not have the final word. The risen Savior calls His people to worship with joy and to share the gospel boldly, since this good news is too important to keep to ourselves.

 

On Guerrilla Christianity, this episode features the sermon “We Believe” (Letters from God, Part 7) for Palm/Passion Sunday, centered on Philippians 2:5–11. The message traces Christ’s journey from eternal glory to willing humility: Jesus, fully God, “emptied himself,” took the form of a servant, and obeyed to the point of death on a cross. Paul’s hymn is explored as an early creed with a chiastic structure—descent into humiliation, then resurrection and exaltation—culminating in every knee bowing and every tongue confessing Jesus Christ as Lord.