Theodoret of Cyrus: Defintion of Faith

Firstly he teaches the very definition of faith. Faith is the substance of things hoped for, the proof of things unseen (v.1): through it we see what is unseen, and it acts as an eye for discernment of what is hoped for.

- Theodoret of Cyrus (around A.D. 393 to around A.D. 457), Commentary on Hebrews, Chapter 11, in Theodoret of Cyrus, Commentary on the Letters of St. Paul, Volume 2, p. 181 (2001), Robert C. Hill translator.