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,
(3) The same water which destroyed the antediluvians was the water which bore up the ark and delivered Noah and his family into a new life.  It is the water of baptism that destroys the wicked today, in the sense that they rebel against God's command, belittle and despise it, either refusing to do it at all, or downgrading any necessity of it, even if they submit to it; while at the same time, it is the water of baptism that buries the Christian from his past and "into Christ," from which he, like Noah, "rises to walk in newness of life."