Born, the Testimony Outside

The sermon continues the discipleship series by moving from the inward miracle of new birth to the public confession that belongs with it. If the Spirit gives life inside, what does baptism represent outside? Peter's Pentecost sermon answers by showing that baptism is not an empty religious ceremony or a private spiritual preference. It is the fitting response of those who have received the gospel, been cut to the heart, and turned to Christ in repentance and faith.

Acts 2 also shows that baptism openly identifies a believer with Jesus as Lord and Savior. Peter calls his hearers to repent and be baptized in the name of Jesus Christ, even though that name had just been rejected and crucified in Jerusalem. Baptism therefore carries allegiance. It says publicly, 'I belong to Jesus.' It pictures union with His death and resurrection, and it calls believers away from a crooked generation into visible obedience to Christ.

Finally, baptism is not a doorway into isolation. Those who received Peter's word were baptized, added, and devoted themselves to the apostles' teaching, fellowship, breaking of bread, and prayers. Baptism belongs with a recognized shared life among God's people. The sermon presses hearers to consider not only whether they have privately believed, but whether they have confessed Christ openly and entered the accountable, embodied life of a local church.