How do we know salvation comes from faith in Jesus Christ?

The assurance of salvation through faith in Jesus Christ is a central tenet of the Christian faith, powerfully articulated in Acts 2:36-38. Here, Peter declares that God has made Jesus, whom they crucified, both Lord and Christ. This proclamation reinforces the belief that only through Jesus can we find forgiveness and salvation. When the crowd is pricked in their hearts and asks what they should do, Peter's response emphasizes the necessity of repentance and belief in Christ for the remission of sins. Thus, the promise of salvation through faith is clear and entails a response of turning to Jesus, who died and rose again to save us from our sins.