John Chrysostom

"Having therefore, brethren, boldness to enter into the holiest by the blood of Jesus." Having shown the difference of the High Priest, and of the sacrifices, and of the tabernacle, and of the Covenant, and of the promise, and that the difference is great, since those are temporal, but these eternal, those "near to vanishing away," these permanent, those powerless, these perfect, those figures, these reality. …

Homily on Hebrews 19 ↗

Theophylact of Ohrid

After having shown the superiority of our High Priest over those of the Old Testament, and of the offering of Christ over the sacrifices according to the law, and that through this offering we have been freed from sins, he interrupts the dogmatic teaching, giving rest to the listener, and quite opportunely transitions to moral teaching. And having just mentioned the remission of sins, he finally urges them not to fall into them anymore: "having," he says, "boldness," by reason of the remission of sins. …

Commentary on Hebrews ↗

Oecumenius

Since he demonstrated the superiority of our high priest over the former ones, and the superiority of the new covenant over the old one, and the superiority of Christ's offering over the legal sacrifices; and that through it we have been freed from sins, he indeed refreshes the doctrinal discourse, giving the listener a breathing space; but he also very aptly moves on to the discourse concerning life. …

The Pseudo-Oecumenian Catena on Hebrews ↗

Thomas Aquinas

501. – After showing the many ways in which Christ's priesthood is superior to that of the Old Law, the Apostle, in keeping with his practice, comes to a conclusion and exhorts us to adhere faithfully to that priesthood. For above, after recommending something the Apostle always gave an admonition, because he took the trouble to commend Christ's grace, in order to incline them to obey Christ and desist from the ceremonies of the Law. …

Commentary on Hebrews ↗