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,
"Corresponding to" (1 Peter 3:21) is a translation of the Greek word antitypon ("antitype"). This is one of the places in the New Testament where the writer identified something as a type (cf. also Romans 5:14; 1 Corinthians 10:6; 1 Corinthians 10:11; Hebrews 9:24). The flood in Noah’s day is a type (i.e., a divinely intended foreshadowing) of baptism.