John Chrysostom
I will carry out the promises made to Abraham concerning you, for ‘Abraham obeyed My voice and kept what I commanded him: My commands, My statutes, and My laws.’ Reflect on the wisdom of God, how it inspires the spirit of the righteous, uplifts him, and guides him to emulate his father. If Abraham has received such a great promise due to his obedience, consider what blessings you will receive from Me if you earnestly follow his example and walk in his ways. One who benefits from another's righteousness will be all the more honored by divine care if he himself is righteous.
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What does it signify that ‘He obeyed My voice and kept what I commanded him - My commands, My statutes’? When I told him, ‘Go from your land, from your relatives, and from your father’s house to the land which I will show you’ (Gen. 12:1), he left everything behind and set his heart on the unfamiliar, unwavering in spirit, fully obeying My command without hesitation. Then I made him a promise that was beyond the natural realm, despite the despair his advanced age and his wife’s barrenness might have suggested; yet upon hearing that his descendants would be as numerous as the stars, he remained untroubled and believed. His faith was deemed righteousness, for he trusted in My omnipotence and My promises, transcending human frailties.
After your birth, when your mother felt resentment toward Ishmael, born of a maidservant, wishing to send him and Hagar away, Abraham, despite his parental affection, adhered to My command to heed Sarah's request. He set aside his own feelings and complied entirely with My voice. When commanded to sacrifice the son of his old age, whom he cherished dearly, he did not question the command, nor did he share his intentions with your mother or servants, nor did he explain to you what he planned; rather, with courage and readiness, he swiftly obeyed My command. Consequently, although I did not allow the act to come to fruition, due to his great obedience and compliance with My will, I designate you, his offspring, as an heir to the promises given to him.
Thus, imitate his obedience and trust in My word so that you may receive even greater rewards, both for your father’s righteousness and your own fidelity. Remain steadfast here and do not flee to Egypt. Observe how God, in His mercy, strengthened Isaac's heart by reminding him of Abraham’s virtue.