1 Timothy 6:15

which in its own times he will show, the blessed and only Sovereign, the King of kings and Lord of lords, who alone has immortality, dwelling in unapproachable light, whom no man has seen nor can see; to whom be honor and eternal power. Amen. …

What is owed to the lonely Lord, which is to the Word, that is, to that spiritual, true sword of Solomon. What is the lonely? Is it the Father without the Son, or the Son without the Father? By no means. When I say only the Father, I do not separate the Son; because in the bosom and secret of the Father is the Son.

Of the other titles, some are evidently names of His Authority, others of His Government of the world, and of this viewed under a twofold aspect, the one before the other in the Incarnation. For instance the Almighty, the King of Glory, or of The Ages, or of The Powers, or of The Beloved, or of Kings. Or again the Lord of Sabaoth, that is of Hosts, or of Powers, or of Lords; these are clearly titles belonging to His Authority. But the God either of Salvation or of Vengeance, or of Peace, or of Righteousness; or of Abraham, Isaac, and Jacob, and of all the spiritual Israel that seeth God,—these belong to His Government. For since we are governed by these three things, the fear of punishment, the hope of salvation and of glory besides, and the practice of the virtues by which these are attained, the Name of the God of Vengeance governs fear, and that of the God of Salvation our hope, and that of the God of Virtues our practice; that whoever attains to any of these may, as carrying God in himself, press on yet more unto perfection, and to that affinity which arises out of virtues.

When someone sees resplendent lords of rank, kings, leaders and all those who appear prominent in wealth, to them he speaks in fearful words. Their dynasties are advantaged by his fear. Yet "now, kings, understand; be instructed, all you who judge the earth; serve the Lord with fear and rejoice in him with trembling," because "he is the King of kings and the Lord of lords." Wherever the mighty rules, God threatens with the fear of his kingdom. Yet wherever the worthless are humbled, God offers the medicine of his clemency. For this God is a great King to those who reign and a Lord to those who exercise lordship. Again, the very same one lowers his rank and is found, according to holy Scripture, to be a Father to orphans and a Judge to widows, a King to kings, a Leader to leaders, a Lord to lords.

"Which in His times He shall show, Who is the blessed and only Potentate, King of kings, and Lord of lords, Who only hath immortality, dwelling in the light which no man can approach unto." Of whom are these things said? Of the Father, or of the Son? Of the Son, undoubtedly: and it is said for the consolation of Timothy, that he may not fear nor stand in awe of the kings of the earth. "In His times," that is, the due and fitting times, that he may not be impatient, because it has not yet come. And whence is it manifest, that He will show it? Because He is the Potentate, the "only Potentate." He then will show it, Who is "blessed," nay blessedness itself; and this is said, to show that in that appearing there is nothing painful or uneasy. But he says, "only," either in contradistinction to men, or because He was unoriginated, or as we sometimes speak of a man whom we wish to extol. "Who only hath immortality." What then? hath not the Son immortality? Is He not immortality itself? How should not He, who is of the same substance with the Father, have immortality?