John Chrysostom : Ah! how great a dignity! He vouchsafed "to be called their God." What dost thou say? He is called the God of the earth, and the God of Heaven, and hast thou set it down as a great thing that "He is not ashamed to be called their God"? Great and truly great this is, and a proof of exceeding blessedness. How? Because He is called God of earth and of heaven as also of the Gentiles: in that He created and formed them: but God of those holy men, not in this sense, but as some true friend. And I will make it plain to you by an example; as in the case of slaves in large households, when any of those placed over the household are very highly esteemed, and manage everything themselves, and can use great freedom towards their masters, the Master is called after them, and one may find many so called. But what do I say? As we might say the God, not of the Gentiles but of the world, so we might say "the God of Abraham." But you do not know how great a dignity this is, because we do not attain to it. For as now He is called the Lord of all Christians, and yet the name goes beyond our deserts: consider the greatness if He were called the God of one person! He who is called the God of the whole world is "not ashamed to be called" the God of three men: and with good reason: for the saints would turn the scale, I do not say against the world but against ten thousand such. "For one man who doeth the will of the Lord, is better than ten thousand transgressors." — Homily on Hebrews 24 John Chrysostom : Now that they called themselves "strangers" in this sense is manifest. But supposing that they said they were "strangers" on account of the strange land, why did David also call himself a stranger? Was not he a king? Was not he a prophet? Did he not spend his life in his own country? Why then does he say, "I am a stranger and a sojourner"? How art thou a stranger? "As" (he says) "all my fathers were." Seest thou that they too were strangers? We have a country, he means, but not really our country. But how art thou thyself a stranger? As to the earth. Therefore they also were strangers in respect of the earth: For "as they were," he says, so also am I; and as he, so they too. Let us even now become strangers; that God may "not be ashamed of us to be called our God." For it is a shame to Him, when He is called the God of the wicked, and He also is ashamed of them; as He is glorified when He is called the God of the good and the kind, and of them that cultivate virtue. For if "we" decline to be called the masters of our wicked slaves, and give them up; and should any one come to us and say, "such a one does innumerable bad things, he is your slave, is he not?" We immediately say, "by no means," to get rid of the disgrace: for a slave has a close relation to his master, and the discredit passes from the one to the other. But they were so illustrious, so full of confidence, that not only was He "not ashamed to be called" from them, but He even Himself says, "I am the God of Abraham, and the God of Isaac, and the God of Jacob." — Homily on Hebrews 24 Oecumenius : "Therefore God is not ashamed." For just as God is called the God of the world, so Abraham, Isaac, and Jacob are called by Him, having made them counterparts of creation. And this is the greatest honor, to deem God to be called their God. For just as God is adorned by the patriarchs, so He is called the God of Abraham, Isaac, and Jacob. "for He has prepared a city for them." God is not ashamed to be called their God. And therefore, He says, He is not ashamed because He has fulfilled their desire. They desired a city in heaven, and He has prepared a city for them in it. — The Pseudo-Oecumenian Catena on Hebrews Origen of Alexandria : The saints who preceded Jesus' bodily sojourn, who had a somewhat greater mental grasp than the majority of believers, perceived the mysteries of divinity because the word of God was teaching them even before he became flesh, for he was always working, being an imitator of his Father of whom he says, "My Father is working still."He says, perhaps to the Sadducees who do not believe in the doctrine of the resurrection, "Have you not read in the book of Moses, in the passage about the bush, how God said to him, 'I am the God of Abraham, and the God of Isaac, and the God of Jacob'? He is not God of the dead, but of the living." If, therefore, God "is not ashamed to be called the God" of these people, and they are numbered among the living by Christ, and all the believers are sons of Abraham, since all the nations are blessed in the faithful Abraham whom God appointed father of the nations, are we hesitant to accept that the living have known the lessons of the living, since they were instructed by Christ, who has existed before the morning star, before he became flesh? — COMMENTARY ON THE GOSPEL OF John 6.17-18 Philoxenus of Mabbug : "It is evident that they desired a country better than the land of Canaan, which is heaven." And for this reason God teacheth us clearly that it was not that material land of promise which God promised to shew to Abraham. After He had brought him out of Ur of the Chaldees He made him dwell in Harran, and He did not carry him to the land of Canaan immediately after his coming forth. And again, that Abraham might not think that he heard the report of a reward, and therefore go forth after the voice of God, He did not make known to him at the beginning the name of the country to which He would bring him. — 13 Ascetic Discourses, Discourse 4 -- On Faith: First Discourse on Simplicity Theodoret of Cyrus : It was opportune of him to use the phrase "he is not ashamed." The Lord of the powers, Master of the angels and Maker of heaven and earth when asked, "What is your name?" passed over all others and said, "I am the God of Abraham, the God of Isaac, the God of Jacob. This is my name forever, and how I am to be remembered by generations of generations." — INTERPRETATION OF Hebrews 11