Mat Matthew, chapter The Gospel According to Matthew, chapter 3
When John baptized Jesus, God showed that Jesus was his Son by sending the Holy Spirit upon him.
Matthew 3:13-17
During that time, Jesus went from Galilee District to the Jordan River, where John was. He did that in order to be baptized by John {in order to ask that John would baptize him}. Mrk 1:9; Luk 3:21