1 Peter 3:19-21

in which He also went and preached to the spirits now in prison, who once were disobedient, when the great patience of God was waiting in the days of Noah, during the building of the ark, in which a few, that is, eight persons [Noah’s family], were brought safely through the water. [Gen 6-8] Corresponding to that [rescue through the flood], baptism [which is an expression of a believer’s new life in Christ] now saves you, not by removing dirt from the body, but by an appeal to God for a good (clear) conscience, [demonstrating what you believe to be yours] through the resurrection of Jesus Christ