This design portrays the sacred moment when John the Baptist baptizes Jesus in the waters of the Jordan River. Christ, with a serene expression, bows in humility as John, holding a staff with the words "Ecce Agnus Dei" (Behold the Lamb of God), pours water over His head. This scene signifies the beginning of Jesus' public ministry and serves as a powerful reminder of spiritual renewal and the cleansing of sins. The surrounding elements frame the event, highlighting its divine significance and the fulfillment of prophecy.