Romans 2:23

But that the honour which we pay to the Son of God, as well as that which we render to God the Father, consists of an upright course of life, is plainly taught us by the passage, “Thou that makest thy boast of the law, through breaking the law dishonourest thou God?” and also, “Of how much sorer punishment, suppose ye, shall he be thought worthy, who hath trodden under foot the Son of God, and hath counted the blood of the covenant, wherewith he was sanctified, an unholy thing, and hath done despite unto the Spirit of grace?” For if he who transgresses the law dishonours God by his transgression, and he who treads under foot the word treads under foot the Son of God, it is evident that he who keeps the law honours God, and that the worshipper of God is he whose life is regulated by the principles and precepts of the divine word. …

Then comes what I mentioned above; then he shows what the Jew is, and says that he is called a Jew, but by no means fulfils what he promises to do. “But if,” says he, “thou callest thyself a Jew, and restest in the law, and makest thy boast of God, and knowest His will, and triest the things that are different, being instructed out of the law; and art confident that thou art thyself a guide of the blind, a light of them that are in darkness, an instructor of the foolish, a teacher of babes, which hast the form of knowledge and of the truth in the law. …

Ver. 23 . “Thou that makest a boast in the Law through breaking the Law dishonorest thou God?” There are two accusations which he makes, or rather three. Both that they dishonor, and dishonor that whereby they were honored; and that they dishonor Him that honored them, which was the utmost extreme of unfeelingness. And then, not to seem to be accusing them of his own mind, he brings in the Prophet as their accuser, here briefly and concisely as it were in a summary, but afterwards more in detail, and here Isaiah, and after that David, when he had shown the grounds of reproof to be more than one. For to show, he means, that it is not I who speak these things to your reproach, hear what Isaiah saith.

[4.] This let us avoid, and glorify the Son. Had He not been of the same Nature, He would not have spoken thus. For had He merely taught, but been of different Substance, a man might not have known Him, and yet have known the Father; and again, it would not have been that one who knew Him, would have altogether known the Father; for neither doth one who knoweth a man know an Angel. “Yes,” replieth some one, “he that knoweth the creation, knoweth God.” By no means. Many, or rather I should say, all men know the creation, (for they see it) but they know not God. Let us then glorify the Son of God, not with this glory (of words) only, but that also which is by works. For the first without the last is nothing. “Behold,” saith St. …

10. You chose a bad introducer. If you will take my counsel, both you and I will by preference turn to him who introduces us to the Father and who said ‘No man cometh unto the Father but by me.’ I lament for you, my brother, if you believe this; and if you believe it not, I still lament that you hunt through all sorts of ancient and antiquated documents for grounds for suspecting other men of perjury, while perjury, lasting and endless with all its inexplicable impiety, remains upon your own lips. …

4. For since, as I before said, there are divers proclamations, listen, as in a figure, to the prophet blowing the trumpet; and further, having turned to the truth, be ready for the announcement of the trumpet, for he saith, ‘Blow ye the trumpet in Sion: sanctify a fast.’ This is a warning trumpet, and commands with great earnestness, that when we fast, we should hallow the fast. For not all those who call upon God, hallow God, since there are some who defile Him; yet not Him, that is impossible, but their own mind concerning Him; for He is holy, and has pleasure in the saints. …