Holy Spirit in Christianity the Book of Acts. The Holy Spirit does not simply appear for the first time at Pentecost after the resurrection of Jesus, but is present in the Gospel of Luke (in 1–2) prior to the birth of Jesus. In , John the Baptist was said to be "filled with the Holy Spirit" prior to birth, and the Holy Spirit came upon the Virgin Mary in . In John the Baptist stated that Jesus baptized not with water but with the Holy Spirit; and the Holy Spirit descended on Jesus during his baptism in the Jordan River. In Jesus provided assurances
John the Baptist of Elijah in , who also wore a garment of hair and a leather belt. In Matthew, Jesus explicitly teaches that John is "Elijah who was to come" (Matt. 11:14 – see also Matt. 17:11–13); many Christian theologians have taken this to mean that John was Elijah's successor. In the Gospel of John, John the Baptist explicitly denies being Elijah. In the annunciation narrative in Luke, an angel appears to Zechariah, John's father, and tells him that John "will turn many of the sons of Israel to the Lord their God," and that he will go forth "in the spirit