Abraham, ready to receive strangers, faithful towards God, devoted in ministering, quick in his service, saw the Trinity in a type; he added religious duty to hospitality, when beholding Three he worshipped One, and preserving the distinction of the Persons, yet addressed one Lord, he offered to Three the honour of his gift, while acknowledging one Power. It was not learning but grace which spoke in him, and he believed better what he had not learnt than we who have learnt. No one had falsified the representation of the truth, and so he sees Three, but worships the Unity. He brings forth three measures of fine meal, and slays one victim, considering that one sacrifice is sufficient, but a triple gift; one victim, an offering of three. And in the four kings, who does not understand that he subjected to himself the elements of the material creation, and all earthly things in a sign whereby the Lord’s Passion was prefigured? Faithful in war, moderate in his triumph, in that he preferred not to become richer by the gifts of men, but by those of God.

He believed that he when old could beget a son, and judged himself when a father able to sacrifice his son; nor did his fatherly affection tremble when duty aided the right hand of the old man, for he knew that his son would be more acceptable to God when sacrificed than when whole. Therefore he brings his well-beloved son to be sacrificed, and offered promptly him whom he had received late; nor is he restrained by being called by the name of father, when his son called him “Father,” and he replied, “My son.” Dear pledges of love are these names, but the commands of God are loved still more. And so although their hearts felt for each other, their purpose remained firm. The father’s hand stretched out the knife over his son, and the father’s heart struck the blow that the sentence might not fail of being carried out; he feared lest the stroke should miss, lest his right hand should fail. He felt the movings of fatherly affection, but did not shrink from the work of submission, and hastened his obedience, even when he heard the voice from heaven. Let us then set God before all those whom we love, father, brother, mother, that He may preserve for us those whom we love, as in the case of Abraham we behold rather the liberal Rewarder than the servant.

The father offered indeed his son, but God is appeased not by blood but by dutiful obedience. He showed the ram in the thicket in the stead of the lad, that He might restore the son to his father, and yet the victim not fail the priest. And so Abraham was not stained with his son’s blood, nor was God deprived of the sacrifice. The prophet spoke, and neither yielded to boastfulness nor continued obstinate, but took the ram in exchange for the lad. And by this is shown the more how piously he offered him whom he now so gladly received back. And thou, if thou offer thy gift to God, dost not lose it. But we are tenacious of our own; God gave His only Son for us, we refuse ours. Abraham saw this and recognized the mystery, that salvation should be to us from the Tree, nor did it escape his notice that in one and the same sacrifice it was One that seemed to be offered, Another which could be slain. — Two Books on the Decease of His Brother Saytrus – Book II, para. 96-98.