6 Let us hear, then, the Beginning who speaks to us: “I have,” said He, “many things to say of you and to judge.” You remember that He said, “I do not judge any one.” See, now He says, “I have many things to say of you and to judge.” But, “I do not judge” is one thing: “I have to judge” is another; for He had come to save the world, not to judge the world. In saying, “I have many things to say of you and to judge,” He speaks of the future judgment. For therefore did He ascend, that He may come to judge the living and the dead. No one will judge more justly than He who was unjustly judged. “Many things,” said He, “have I to say of you and to judge; but He that sent me is true.” See how the Son, His equal, gives glory to the Father. For He sets us an example, and says as it were in our hearts: O believer, if you hear my gospel, the Lord your God says to you, when I, in the beginning God the Word with God, equal with the Father, coeternal with Him that begot, give glory to Him whose Son I am, how can you be proud before Him, whose servant you are?
Source: Tractates on the Gospel of John (New Advent)