Hebrews 1:5

“Who,” he says, “is like to Jehovah among the sons of God?” (Psalm 89:6.)

The answer to all this is in no way difficult. Princes are called by this name on account of a particular circumstance; as to Israel, the common grace of election is thus denoted; angels are called the sons of God as having a certain resemblance to him, because they are celestial spirits and possess some portion of divinity in their blessed immortality. But when David without any addition calls himself as the type of Christ the Son of God, he denotes something peculiar and more excellent than the honor given to angels or to princes, or even to all Israel. Otherwise it would have been an improper and absurd expression, if he was by way of excellence called the son of God, and yet had nothing more than others; for he is thus separated from all other beings. When it is said so exclusively of Christ, “Thou art my Son,” it follows that this honor does not belong to any of the angels.

If any one again objects and says, that David was thus raised above the angels; to this I answer, that it is nothing strange for him to be elevated above angels while bearing the image of Christ; for in like manner there was no wrong done to angels when the high-priest, who made an atonement for sins, was called a mediator. They did not indeed obtain that title as by right their own; but as they represented the kingdom of Christ, they derived also the name from him. Moreover, the sacraments, though in themselves lifeless, are yet honored with titles which angels cannot claim without being guilty of sacrilege. It is hence evident that the argument derived from the term Son, is well grounded.

As to his being begotten, we must briefly observe, that it is to be understood relatively here: for the subtle reasoning of Augustine is frivolous, when he imagines that today means perpetuity or eternity. Christ doubtless is the eternal Son of God, for he is wisdom, born before time; but this has no connection with this passage, in which respect is had to men, by whom Christ was acknowledged to be the Son of God after the Father had manifested him. Hence that declaration or manifestation which Paul mentions in Romans 1:4, was, so to speak, a sort of an external begetting; for the hidden and internal which had preceded, was unknown to men; nor could there have been any account taken of it, had not the Father given proof of it by a visible manifestation.

I will be to him a Father, etc. As to this second testimony the former observation holds good. Solomon is here referred to, and though he was inferior to the angels, yet when God promised to be his Father, he was separated from the common rank of all others; for he was not to be to him a Father as to one of the princes, but as to one who was more eminent than all the rest. By the same privilege he was made a Son; all others were excluded from the like honor. But that this was not said of Solomon otherwise than as a type of Christ, is evident from the context; for the empire of the whole world is destined for the Son mentioned there, and perpetuity is also ascribed to his empire: on the other hand, it appears that the kingdom of Solomon has confined within narrow bounds, and was so far from being perpetual, that immediately after his death it was divided, and some time afterwards it fell altogether. Again, in that Psalm the sun and moon are summoned as witnesses, and the Lord swears that as long as they shall shine in the heavens, that kingdom shall remain safe: and on the other hand, the kingdom of David in a short time fell into decay, and at length utterly perished. And further, we may easily gather from many passages in the Prophets, that that promise was never understood otherwise than of Christ; so that no one can evade by saying that this is a new comment; for hence also has commonly prevailed among the Jews the practice of calling Christ the Son of David.