Theodoret of Cyrus: Passion Pays Human Debt

In no way, after all, does he take hold of angels: it is Abraham's seed he takes hold of (v.16): if he had assumed the nature of angels, he would have proved superior to death; but since what he assumed was human, through the passion he paid humankind's debt, while through the resurrection of the body that had suffered he demonstrated his own power.

- Theodoret of Cyrus (around A.D. 393 to around A.D. 457), Commentary on Hebrews, Chapter 2, in Theodoret of Cyrus, Commentary on the Letters of St. Paul, Volume 2, p. 148 (2001), Robert C. Hill translator.