Gabriel; (Jibril) God is my
strength, or Hero (Gabor) of God.
The name Gabriel is of Chaldean origin and was unknown to the Jews prior to Captivity. The Sumerian origin of the word Gabri is GBR; gubernator, or governor; hence governor of Paradise. Geburael is usually listed as 5th of the 10 holy sefiroth (divine emmanation).
According to the Book of Enoch, Gabriel is the angel of annunciation, resurrection, mercy and vengeance, death and revelation. One of the holy angels, who is over Paradise and the serpents and the Cherubim. Gabriel is a Seraph but is also called the head of the Cherubs (Cherubiel). He is thought to be the man in linen in Eze 9,10ff and Daniel 10-11 and the angel who will blow the trumpet to announce the coming of Judgment Day. [Christian Trad.: Century Cyclopedia, 1667] In Rabbinic literature Gabriel is the Prince of Justice. Origin in De Principiis 1;81 calls Gabriel the angel of War. Longfellow's The Golden Legend makes Gabriel the angel of the Moon who gives man the gift of hope. He is the Ruling Prince of the first heaven, Chief of the angelic guards over Paradise and sits at the left hand of God (which could indicate femininity, but don't tell him I said that).
In Jewish legend it was Gabriel who delt with death and destruction to the sinful cities of the plain (Sodom and Gomorrah among them), according to Talmud Sanhedrin95b he smote Sennacherib's hosts. In Bamberger's Fallen Angels, p. 109, quoting a Babylonian legend, Gabriel once fell into disgrace "for not obeying a command exactly as given and remained for a while outside the heavenly Curtain." In the Bible, a messenger of good news (Daniel 8:16-26; Luke 1:11-20, 26-38) the heavenly messenger sent to explain Daniel's visions; he also revealed to Zechariah. an angel who explained signs from God and announced births of Jesus and John the Baptist. [N.T.: Luke 1:19, 26] the conception, and mission of Jesus to Mary. In the Qur'an he is known as Jibril, and Muslims believe that he brought God's revelations to Mohammed.
In the Book of Enoch God said to Gabriel; 'Proceed against the bastards and the reprobates, and against the children of fornication: and destroy [the children of fornication and] the children of the Watchers from amongst men [and cause them to go forth]: send them one against the other that they may destroy each other in battle: for length of days shall they not have. And no request that they (i.e. their fathers) make of thee shall be granted unto their fathers on their behalf; for they hope to live an eternal life, and that each one of them will live five hundred years.'