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"
Sources for the historicity of Jesus always later documents of lower value. Sources for the historicity of Jesus Christian sources, such as the New Testament books in the Christian Bible, include detailed stories about Jesus but scholars differ on the historicity of specific episodes described in the Biblical accounts of Jesus. The only two events subject to "almost universal assent" are that Jesus was baptized by John the Baptist and was crucified by the order of the Roman Prefect Pontius Pilate. Non-Christian sources that are used to study and establish the historicity of Jesus include Jewish sources such as Josephus, and Roman sources such as Tacitus.