What is the context?
The preceding verse recalls Noah’s family brought safely through the floodwater. Peter now connects that rescue with baptism, using a word for a corresponding picture.
His statement includes its own clarification: the saving matter is not bodily dirt being washed off. The BSB speaks of a pledge of a clear conscience toward God; the Greek expression is also understood as an appeal to God for a good conscience. Peter grounds the connection in Jesus Christ’s resurrection.
How is this passage commonly understood?
The Catholic Catechism, 1213, teaches new birth and incorporation into Christ through baptism. The Lutheran Small Catechism, Baptism, links forgiveness and salvation with God’s word joined to the water and received in faith.
The Reformed Westminster Confession, 28.1, 28.5–6, teaches a sign and seal of grace while rejecting the claim that every baptized person is necessarily born anew. The 1689 Baptist Confession, 29.1–2, emphasizes the sign of union with Christ, administered to those professing repentance and faith. Wesley distinguishes the outward sign from inward grace. The traditions therefore relate baptism and salvation differently, rather than agreeing on every part of the verse.
Where does this fit in God's plan?
Romans 6:3–5 links baptism with sharing in Christ’s death and resurrection and walking in new life. That connection helps keep Peter’s language centered on Christ’s saving work, rather than on an isolated washing.
The following verse places the risen Jesus at God’s right hand over every authority. The rescue pictured here rests on the Savior who has passed through death and now lives and rules.
What is our position?
Our study Baptism understands baptism here as the appointed expression of genuine faith, in which that faith is formally pledged before God. The water has no saving power of its own. The saving power belongs to Christ and His resurrection, received through faith.