A new means of salvation marks the new era: “For Christ also suffered for sins once for all, the righteous for the unrighteous, in order to bring you to God. He was put to death in the flesh but made alive in the spirit” (3:18). A reference to “the days of Noah” and the eight persons who “were saved through water” turns the thoughts of our author to baptism. “And baptism, which this prefigured, now saves you—not as a removal of dirt from the body, but as an appeal to God for a good conscience, through the resurrection of Jesus Christ, who has gone into heaven and is at the right hand of God, with angels, authorities, and powers made subject to him” (3:20-22). Baptism in the name of Christ means participation in the atoning work of Christ, and hence the enjoyment of eternal salvation. (Donald A. Hagner, How New is the New Testament? First-Century Judaism and the Emergence of Christianity [Grand Rapids, Mich.: Baker Academic, 2018], 153, emphasis added)
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