Thank you so much berrysquare! 
Hmm yea kind of ; he is some kind of guardian of God who represents religion in the human world ; he eradicates violent people in the human world, because violence is an unforgivable sin.
So he's crying because of all the violence in the human world, and that he has to kill to remove violence from Earth o vo
The tears on his face represent the sadness of God, and they shine when he kills
