John Chrysostom

"For ye are all sons of light, and sons of the day."

And how is it possible to be "sons of the day"? Just as it is said, "sons of destruction" and "sons of hell." Wherefore Christ also said to the Pharisees, "Woe unto you-for ye compass sea and land to make one proselyte, and when he is become so, ye make him a son of hell." (Matt. xxiii. 15.) And again Paul said, "For which things' sake cometh the wrath of God upon the sons of disobedience." (Col. iii. 6.) That is, those who do the works of hell and the works of disobedience. So also sons of God are those who do things pleasing to God; so also sons of day and sons of light, those who do the works of light. "And we are not of the night nor of darkness."