Cyril of Alexandria : Abraham took it very hard when Hagar fled from him, though he had sent her off at God's command. Similarly it was a great cause of sorrow to the holy apostles and evangelists when Israel fell. However, they were separated from them, not at all willingly but because of God's will and out of love for Christ. For this reason the divine Paul writes, "My sorrow is great, and I have continuous pain in my heart, for I would wish that I myself could be separated from Christ for the sake of my brothers, who are from the same race as I according to the flesh; they are Israelites." So, when the mother of the Jews was sent away, she wandered for a long time in the wilderness, and there was some danger of her being wholly destroyed. But if she should begin to weep (like Hagar) in time and cry out to God, she will be shown mercy abundantly. For God will open the eyes of their understanding, and they too will see the fountain of living water, that is, Christ. And believing they too will rejoice, and having been washed they will be made clean, according to the saying of the prophet. — GLAPHYRA ON Genesis 3.10 John Chrysostom : "He opened her eyes," the text goes on, not because she couldn't see before this but because even with her eyes open nothing was of any help to her before the visitation from on high. Hence, since his intention was to give evidence of care on his part, it says, "He opened her eyes," that is, he made clear to her in her ignorance, he activated her mind, he showed her the way to find the place flowing with springs of water. "She saw a well of running water," the text goes on, "and she went and filled the bag, and gave the boy to drink." In her neediness the Lord granted her means, and when she found herself so much at a loss and lacking all hope of survival, he gave evidence in her case of his characteristic generosity by consoling her and at the same time exercising care for the child.In like manner, whenever God wishes, even if we are utterly alone, even if we are in desperate trouble, even if we have no hope of survival, we need no other assistance, since God's grace is all we require. You see, if we win favor from him, no one will get the better of us, but rather we will prevail against anyone. "God was with the boy," the text goes on; "he grew up and lived in the desert." In similar fashion, whenever we have God on our side, even if we are utterly alone, we will live more securely than those who dwell in the cities. After all, the grace of God is the greatest security and the most impregnable fortification. — HOMILIES ON Genesis 46.7-8 John Chrysostom : Mindful of this, let us, I beseech you, shun the harm of this passion and with all our might exterminate it from our own souls. This, after all, is more deadly than all other passions and undermines our very salvation, being in fact the invention of the wicked demon. Hence a certain sage also said, "Through the devil's envy death entered the world." What is meant by "through the devil's envy death entered the world"?You see, since this wicked beast saw that the first-formed human being was created immortal, by his characteristic wickedness he led him on to disobedience of the command and in that way caused him to bring on himself the penalty of death. So envy caused deception, deception caused disobedience, and disobedience caused death. Hence the text says, "Through the devil's envy death entered the world." Do you see the extent of the harm caused by this passion? It made the one given the privilege of immortality undergo death. The enemy of our salvation, however, introduced the envy characteristic of himself and caused the first-formed human being, immortal though he was, to come under sentence of death, whereas the caring and loving Lord by his own death once again bestowed upon us immortality, and so we found greater benefits than we had lost. The former took us out of paradise; the latter led us into heaven. The former caused us to be condemned to death; the latter bestowed upon us immortality. The former deprived us of the delights of paradise; the latter prepared for us the kingdom of heaven. Do you see the inventiveness of your Lord in that he directed against the devil's head his own weapons of malice against our salvation? In fact, not only did he regale us with greater benefits, but also he made him subject to us in the words "Behold, I have given you power to walk over snakes and scorpions." Accordingly, keeping all this in mind, let us banish envy from our own souls and win favor from God. This, after all, is our invincible weapon; this, our greatest resource. Hence Ishmael too, young though he was and in utter isolation and neediness, suddenly grew in strength and developed into a great nation since, the text says, "God was with the child." … Let us therefore, I beseech you, despise this present life, long for the future life, esteem favor from God above all other things, and, through an excellent way of living, lay up for ourselves great confidence, so that we may be able to pass this present life without distress and attain those future blessings, thanks to the grace and loving kindness of our Lord Jesus Christ, to whom with the Father and the Holy Spirit be glory, power and honor, now and forever, for ages of ages. Amen. — HOMILIES ON Genesis 46.15-17 Augustine of Hippo : WHEN WAS THE WELL OF THE OATH DUG? — It happened at that time that Abimélech said, etc . Abimélech, and the well which he dug was called the Well of the Oath: How, can one ask, does this accord with the truth? And the reason is that Hagar was expelled from the house of Abraham with her son, and wandered, as stated, by the Well of the Oath, which, according to Scripture says, Abraham made much later , for Abimélech and Abraham swore in this place (Cf Gen. 21:22-24), and this event had certainly not yet arrived (Cf Gen. 21:31), when Sara was driven away with her son from the House of Abraham. How then did she wander around the Well of the Oath (Cf Gen. 21:19)? Should we believe that the well was already dug, and then, as a recapitulation, it then recalls what Abraham did with Abimélech? Although it may also be that the one who wrote the book (Moses) much later chose the name of Well of the Oath to the region where the mother wandered with her son, as if to say: she was wandering in that region where the Well of the Oath was made, although the well would have been made later, but long before the time of the writer (Moses). However, the well was named after the book was written, retaining the ancient name Abraham had given it. But if it is the same well that Hagar saw when opening her eyes, there is no other solution than to solve the question by way of recapitulation. And it should come as no surprise that Hagar did not know the well Abraham had dug, if the well was dug before she was expelled. It could well be that, because of his herds, Abraham dug the well away from the house where he lived with his family, and she did not know of the well. [ — QUESTIONS ON GENESIS, Q. 54 (tr. J. Litteral, draft)