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,
The "baptism that doth also now save" is water baptism. Water was the means chosen by God for exercising His saving power. In like manner, baptism doth also now save us; it is the final step that translates us from the kingdom of darkness into the kingdom of God’s dear son (Mark 16:15-16; Romans 6:3-4; Acts 2:37-38). Noah was saved from death; we are saved from the second death of hell.