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. 11); so also here he used the same syllogism, saying "For if that first covenant had been faultless, then should no place have been sought for the second"; that is, if it made men "faultless." For it is because he is speaking of this that he did not say, "But finding fault with" it, but "But finding fault with them." And "faultless"; that is, useful; not as though it the old Covenant was obnoxious to any charges, but as not being sufficient. He used a familiar form of speech. As if one should say, the house is not faultless, that is, it has some defect, it is decayed: the garment is not faultless, that is, it is coming to pieces. He does not therefore here speak of it as evil, but only as having some fault and deficiency. — Homily on Hebrews 14 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. For if the former had been faultless, that is, if it had nothing lacking, if it made people blameless—then no second covenant would have been introduced. — The Pseudo-Oecumenian Catena on Hebrews