Tertullian An Answer to the Jews nor yet did he observe the Sabbath. For he had "accepted"[38] Tertullian Against Marcion Book V since, also, he deserved for that reason to be called "the father of many nations," whilst we, who are even more like him[123] Tertullian On the Apparel of Women Book II which (injuriousness and violence) even the father of the faith,[24] Tertullian On Monogamy (nations) who, as the fruit of the "faith" which precedes digamy, had to be accounted "sons of Abraham."[36] Pseudo-Gregory Thaumaturgus Second Homily Thou seest how the holy Virgin has surpassed even the perfection of the patriarchs, and how she confirms the covenant which was made with Abraham by God, when He said, "This is the covenant which I shall establish between me and thee."[32] Origen Commentary on John Book VI " If, then, God is not ashamed to be called the God of these men, and if they are counted by Christ among the living, and if all believers are sons of Abraham,[9]