Gabriel was once one of God's mighty angels in heaven. He was known as the "Left Hand of God" and served as a messenger of God. He appeared to the prophet Daniel, revealing secrets about his future. He also appeared to Zacharias and to the Virgin Mary, fortelling the births of John the Baptist and Jesus. He was also one of the four archangels whom God sent to deliver his messages to his prophets. Gabriel was also the angel sent to destroy Jerusalem.