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,
baptism now saves -- Literally, “the antitype now saves us, Baptism.” Says Alford, “Water saved them, bearing up the ark; it saves us, becoming to us baptism.” As they entered the Ark, we are “baptized into Christ,” the Savior. See Galatians 3:27. - PNT