Theodoret of Cyrus: Works are Evidence of Faith

If we died with him, we shall also live with him; if we endured with him, we shall also reign with him (vv.11-12). The phrase, we died with him, he applied not only to those taken up for burial but also to the baptized: those who sincerely believe and give evidence of a life in keeping with their faith will share life with the Lord.

- Theodoret of Cyrus (around A.D. 393 to around A.D. 457), Commentary on 2 Timothy, Chapter 2, in Theodoret of Cyrus, Commentary on the Letters of St. Paul, Volume 2, p. 241 (2001), Robert C. Hill translator.