“In those days,
He was baptized
In the Jordan River.”
Καὶ ἐγένετο ἐν ἐκείναις ταῖς ἡμέραις ἦλθεν Ἰησοῦς ἀπὸ Ναζαρὲτ τῆς Γαλιλαίας καὶ ἐβαπτίσθη εἰς τὸν Ἰορδάνην ὑπὸ Ἰωάνου.
One concrete event, John the Baptist baptizing Jesus at the Jordan River, stands at the beginning of the public life of Jesus in all four of the canonical gospel accounts of Mark, chapter 1:9, Matthew, chapter 3:13, Luke, chapter 3:21, and John, chapter 1:32-34. Even many of the historical Jesus skeptics consider the fact that John the Baptist baptized Jesus to be a real historical episode. Mark said that in those days it came to pass (Καὶ ἐγένετο ἐν ἐκείναις ταῖς ἡμέραις) that Jesus came from Nazareth of Galilee (ἦλθεν Ἰησοῦς ἀπὸ Ναζαρὲτ τῆς Γαλιλαίας). Jesus was baptized by John in the Jordan River (καὶ ἐβαπτίσθη εἰς τὸν Ἰορδάνην ὑπὸ Ἰωάνου). In this first appearance of Jesus, the first thing he did was submit to the baptism of John the Baptist. Thus, he might have been a disciple of John. Only Matthew and Mark indicate where he came from, although Matthew only mentioned Galilee and not Nazareth. Jesus came with a purpose, to be baptized by John in the Jordan River. John did not seek out Jesus. Jesus came to him. In Matthew, chapter 3:14-15, John was reluctant to baptize Jesus, but finally did. There was no such discussion in any of the other gospel stories.