Does baptism save?
Because Christ also suffered for sins once, the righteous for the unrighteous, that he might bring you to God; being put to death in the flesh, but made alive in the spirit; in which he also went and preached to the spirits in prison, who before were disobedient, when God waited patiently in the days of Noah, while the ship was being built. In it, few, that is, eight souls, were saved through water. This is a symbol of baptism, which now saves you—not the putting away of the filth of the flesh, but the answer of a good conscience toward God, through the resurrection of Jesus Christ, who is at the right hand of God, having gone into heaven, angels and authorities and powers being made subject to him.
1 Peter 3:18-22In context. Peter on Noah’s flood as a picture: eight were saved through water, and baptism, ‘not the putting away of the filth of the flesh, but the answer of a good conscience toward God’, now saves through Christ’s resurrection.
Scripture states it. Peter writes of “baptism, which now saves you”, and says at once what saves: “not the putting away of the filth of the flesh, but the answer of a good conscience toward God, through the resurrection of Jesus Christ”. Scripture states that baptism saves in that sense. How much the washing and the faith that answers God each carry is where the sides differ.
The Catholic reading
Jesus says one must be born of water and Spirit, Paul calls salvation a washing of regeneration, and Peter writes “baptism now saves you”. Baptism is where the new birth happens, by Christ’s power not the water’s, and the Church has read it so since the second century.
“By Baptism all sins are forgiven, original sin and all personal sins, as well as all punishment for sin.”
Catechism of the Catholic Church 1263
The Protestant reading
Peter adds at once that it is not the washing of the body but the appeal of a good conscience; the saving thing is Christ’s resurrection, held by faith. The thief was saved unbaptised and Cornelius received the Spirit before baptism. Lutherans and Anglicans say baptism truly gives what it signifies, to faith; Baptists say it pictures what faith has received.
“It is not the water indeed that does them, but the word of God which is in and with the water,”
Luther, Small Catechism, on Baptism, 1529