Someone pointed out to me that the writers did something very special with Castiel, and the mythology surrounding him. So here you have it:
Castiel is known as the angel of solitude, tears, and temperance. He is the angel that is known for simply watching the events of the cosmos unfold with little interference. In mythology that is.
But in Supernatural, Castiel, Angel of the Lord could not be more different.
Castiel is the angel of solitude, that no longer wants solitude. Because he learned from humanity that solitude often leads to despair, that solitude was not the answer, even though he too tends to push people away. That family doesn’t end in blood and it doesn’t begin that way either, he is different because he longs for a home as much as his home longs for him.
Castiel is the angel of tears, who sheds them more often than any celestial being should. He was the angel who would comfort YOU when in tears, not need to be comforted himself, but that all changed the moment he got too close to his charge(s).
Castiel is the angel of temperance, who despite everything drank an entire liquor store to attempt and forget his woes and his loss of faith. An angel who drank to forget his holy father wasn’t around if only for a few hours time.
Castiel is among the few angels who does not intervene in the events of the cosmos, but by following one mission, to save a Righteous Man, Castiel began to intervene more than any other angel. He tore up the script, he fell countless times to protect what he believed in, who he believed in. He took the word of God, heaven’s orders, and all divine purpose and threw it away because of two boys.
Castiel, is different and that is good. He has too much heart, limited people skills, and a love for humanity that is only matched with his love for the Winchesters.