John Chrysostom

Whence does appear? In that this the one was cast out, and the other introduced in its place: for it is therefore of force because it is better. For as he says, "If perfection were by" it, "what further need was there, that another priest should rise, after the order of Melchisedec?" (Heb. vii. …

Homily on Hebrews 14 ↗

Theophylact of Ohrid

Observe the order. He said that the covenant of Christ is better than the Old. And from where is this evident? From the fact, he says, that it "is established upon better promises." For if the promises and rewards are better, then it is perfectly clear that the covenant is also better, and the commandments more divine. And from where is it evident that the promises are better? From the fact, he says, that the former was abolished, and this one was introduced in its place. …

Commentary on Hebrews ↗

Oecumenius

Behold the order! He said that the covenant according to Christ is superior to the old one. And how is this evident? Because, he says, it is established on better promises. For if the promises and the recompenses are better, it is clear that the covenant is also better, and the commandments more divine. But how is it evident that the promises are better? From this, he says, that the former was set aside, but this one has taken its place. For this reason, the New covenant prevails, because it is better and more perfect. …

The Pseudo-Oecumenian Catena on Hebrews ↗

Thomas Aquinas

393. – Then when he says, For if that first covenant had been faultless, there would have been no occasion for a second, he proves that the testament of which Christ is mediator is better for the following reason: If the first testament were faultless, another would not be sought to correct its defects. But another is sought, therefore, etc. But on the other hand it says in Romans (7:7): 'Is the law sin? God forbid.' Therefore, it is incorrect to say that it is not faultless. …

Commentary on Hebrews ↗