The angel Gabriel was given the rank of archangel in post-biblical lore and was also one of the three principal angels of Christianity. Gabriel is prominent in Judaic, Christian and Islamic angelology. The name Gabriel means "hero of God" or "the mighty one" in Hebrew. He is the angel of revelation, wisdom, mercy, redemption and promise. He sits at the left hand of God.
Gabriel is mentioned 4 times in the Bible, and always with important news. In the Old Testament he is named as Daniel's frequent visitor, bringing prophetic visions of apocalyptic proportion (Daniel 8:16, 9:21). Angelic attribution of the visions, which were treasonous at the time of the writing of the book of Daniel, might explain Gabriel's prominent presence.
In the New Testament, Gabriel's name is given to Zechariah: "I am Gabriel who stand in God's presence" when he announces the coming birth of John the Baptist (Luke 1:19). Gabriel is once again cited in the annunciation to Mary (Luke 1:26) of the coming birth of Jesus.
Gabriel's role in the Old Testament may have inspired his roles later in Genesis and secondary Hebrew literature, like his appearing to Abraham, and being present at the time of the fallen angels.