for the forgiveness of sins” (Mark 1:4). John demanded more than mere contrition: he called for a deeper conversion that involved a change in the life of the penitent: “Bear fruits that befit repentance” (Luke 3:8; cf. Matt 3:2–11; Mark 1:4–6; Luke 3:1–14). John established the central theme that was reiterated by Jesus: “The time is fulfilled, and the kingdom of God is at hand; repent, and believe in the gospel” (Mark 1:15; Matt 4:17). The call of Jesus was a familiar one, rooted in the OT prophetic
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