Jesus replies that he must "be in his father's house" (). The Synoptic accounts of Jesus' baptism are all preceded by information about John the Baptist. They show John preaching penance and repentance for the remission of sins and encouraging the giving of alms to the poor () as he baptizes people in the area of the Jordan River around Perea and foretells () the arrival of someone "more powerful" than he. Later, Jesus identifies John as "the Elijah who was to come" (, ), the prophet who was expected to arrive before the "great and terrible day of the Lord"
John the Baptist (Caravaggio) detail which is seen in the contemporary still life "Basket of Fruit", while the melancholy self-absorption of the Baptist creates an atmosphere of introspection. The grape leaves stand for the grapes from which the wine of the Last Supper was pressed, while the thorns call to mind the Crown of Thorns, and the sheep is a reminder of the Sacrifice of Christ. Caravaggio's decision to paint John the Baptist as a youth was somewhat unusual for the age: the saint was traditionally shown as either an infant, together with the infant Jesus and possibly his own and Jesus's mother, or