Bede

God said again to Abraham: And you shall therefore keep my covenant, you and your offspring after you throughout their generations; this is my covenant which you shall keep between me and you and your offspring after you: Every male among you shall be circumcised; and you shall circumcise the flesh of your foreskin, and it shall be a sign of the covenant between me and you. The Lord, in His kind provision, first established the covenant of His grace with the blessed Abraham and his offspring; and then He requires of them the covenant of obedience: so that the labor of striving might be less terrifying when the reward of perpetual remuneration is heard first. Therefore, the foreskin of the flesh is commanded to be circumcised, as a sign of the covenant between God and men, so that by this sign the faithful of that time might be reminded to cleanse themselves from all pollution of flesh and spirit, perfecting holiness in the fear of God; but also by a higher mystery, that carnal circumcision was done as a sign of the covenant between God and Abraham's offspring, because it was given as a sign of that covenant of which it was said above to Abraham: In you all the families of the earth shall be blessed; which no faithful person doubts pertains to the grace of the new testament. Therefore, in the sign of this covenant, no faithful person doubts that Abraham and his offspring were circumcised in the flesh of their foreskin, so that it might be typologically prefigured that one would be born from his seed who would cleanse his chosen ones from all stain of sins, and grant them perpetual blessing; to the sacrament of which cleansing aptly corresponds what follows:

A child of eight days shall be circumcised among you. For on the eighth day, that is, after the Sabbath, the Lord rose from the dead, in whose passion and resurrection we are baptized, absolved from the oldness of faults, as if we are renewed by spiritual circumcision; the Apostle explaining and saying: For as many of us as were baptized into Christ Jesus were baptized into His death, therefore we were buried with Him through baptism into death: so that just as Christ was raised from the dead by the glory of the Father, so we also should walk in newness of life (Rom. VI, 3). This number can most fittingly correspond to the time of our resurrection, when we shall be clothed universally with the immortality of the flesh, which we laid down through death, and we shall suffer nothing of sin nor of corruption in the flesh. For our resurrection is also not incongruously figured by the number of the eighth day; because after the six ages of this world and the seventh of rest, that is, the rest of souls, which is now celebrated in another life, the future one will be. Therefore infants were commanded to be circumcised on the eighth day as a sign of the divine covenant to indicate mystically that all the elect by the grace of God would be absolved from all iniquities in this number, cleansed from all corruption of the flesh, and also freed from the very death that they incurred through the guilt of the first transgression.

A male whose foreskin's flesh has not been circumcised, that soul will be cut off from his people: because he has broken my covenant. By this sentence, the greater mystery of the same circumcision is revealed, which is not only a sign of renewal to come in Christ but also an abolition of the transgression committed in Adam; for what baptism now accomplishes through faith in Christ, circumcision accomplished from that time on the eighth day, which was a designation of Christ's resurrection; except that the entrance to the kingdom of heaven was not yet open to those circumcised, before the Lord, rising from death, unlocked the door of that same kingdom to all the elect by ascending to the heavens. For this reason, they were circumcised on the eighth day specifically; to signify that they would not truly be cleansed from all stain of vice except through the effect of the Lord's resurrection. However, it may raise a question how it is said, that soul will be cut off from his people, because he has broken my covenant, when there is no fault of the infant, whose soul, he said, will perish, nor has he himself broken the covenant of God, but those older who did not care to circumcise him; unless because even infants, not according to their own life's property, but according to the common origin of the human race, all broke the covenant of God in that one in whom all sinned. Therefore, since circumcision was a sign of regeneration, and not without reason the infant, on account of original sin, by which the first covenant of God was shattered, would be destroyed by generation unless liberation freed him; thus these divine words must be understood as if it were said: Whoever has not been regenerated, that soul will be cut off from his people, because he has broken the covenant of God; since in Adam, even he sinned with all.

And the Lord said to Abraham: "You shall not call your wife Sarai, but Sarah, and I will bless her, and I will give you a son by her, whom I will bless, and he will become nations, and kings of peoples shall come from him. Here the promises about the calling of the gentiles in Isaac are more evident, that is, in the son of promise, which signifies grace, not nature, because a son is promised from an old man and a barren old woman. Although God also works in the natural course of procreation, where however the evident work of God is, with nature being corrupted and ceasing, grace is understood more evidently; and because this will happen not by generation, but by regeneration, therefore circumcision is now commanded. When a son was promised from Sarah, the names of the parents are also changed, everything resonates with newness, and the New Testament is foreshadowed in the Old. Sarai is interpreted as "My Princess," but Sarah as "Princess," and the reason for the change of the name is this: because she was previously called "My Princess," that is, the mother of one household only, but afterwards she is called "Princess" absolutely; for it follows:

He was ninety-nine years old when he circumcised the flesh of his foreskin, and Ishmael his son had completed thirteen years at the time of his circumcision. Therefore, Abraham was a hundred years old, and Ishmael was thirteen years old when they were circumcised: so that, after a year, when Isaac was born, Abraham was a hundred years old, and Ishmael was fourteen, that is, twice seven, years old? Indeed, in a great mystery: because evidently Isaac held the figure of the New Testament, and Ishmael of the Old Testament. For Isaac, when he was born, his father was a hundred years old, to signify that the grace of the New Testament would bring the children of his promise to the inheritance of the heavenly kingdom. Indeed, the number one hundred, as has often been said, in the arithmetical count, passes from the left to the right, and our heavenly mother Jerusalem is rightly marked by the right hand; for those to whom it is permitted to enter it will stand on the right hand of the Judge in the last examination. In the birth of the same Isaac, Ishmael had completed two weeks of years; evidently because of the sacrament of the Sabbath, which was observed in the Old Testament; so that in the fifteenth year, as if in the sign of the resurrection, that is, of the true circumcision, Isaac would be born; where it would be typified because the passing legal observance given by Moses would be succeeded by grace and truth which came by Jesus Christ. Therefore, when Isaac, who prefigured the grace of the New Testament, was born, his elder brother Ishmael, who signified the Old Testament, had completed the number seven in his age; because the observance of the law, in which the Sabbath held the greatest place, was fit to be extended until the time of grace; but the same number seven is doubled concerning the perfection of the same sacrament; because the law of God desires us to be freed both from servile, that is, from evil works in the body, and from harmful thoughts in the mind. The number seven is doubled because the law commands rest for bodies to its followers in this life and promises rest for souls in the future life; when Isaac was born and the first year of his age began, Ishmael began his fifteenth year because, with the grace of the Gospel appearing, even the law itself, spiritually understood, was found to be full of heavenly sacraments and to have preached the glory of the resurrection; but when Isaac had grown up, at the command of Sarah, Ishmael with his mother was cast out, it should not be thought that the Old Testament is to be abolished by the succession of the New Testament; but rather that the carnal observance of the law, with those who carnally, even while the grace of the Gospel shines, contend that it should be observed, ought to be expelled from the boundaries of the Church; but itself, understood in a spiritual sense, will lose neither a jot nor a tittle until all things are accomplished.

The Lord appeared to him in the valley of Mamre as he was sitting at the entrance of his tent in the heat of the day, etc. This appearance of the Lord is considered to be more sacred than all the previous ones, in which He was seen so many times by the blessed Abraham. And rightly so, after receiving the sacrament of circumcision, after the name was amplified by which he was to be marked as the father of all nations, he came to know the more secret mysteries of God, of which, notably, not only circumcision but also the uncircumcised were to be participants. Rightly, the appearance in the valley of Mamre is remembered as having taken place. For Mamre, as we read above, was indeed an Amorite by race, but together with his brothers, he was allied with Abraham; hence the valley of Mamre aptly represents our humility, who, having derived fleshly origin from the nations, have Abraham as our father in spirit and faith. To whom the Apostle, drawing from Abraham both the origin of flesh and virtue, says: We announce to you eternal life, which was with the Father and appeared to us; what we have seen and heard, we declare to you, so that you too may have fellowship with us (1 John 1:2). And indeed in this reading, apart from the spiritual understanding, it greatly edifies the readers that Abraham, seeing unknown men, immediately ran to meet them as if to offer the grace of hospitality to strangers; that he approached them humbly, worshipped on the ground, that he asked them to wait and accept his service, and hastily provided what they agreed to; and that he completed this not through servants and maidservants, but by himself and Sarah. It is indeed remarkable if, upon first seeing them, he did not believe they were men, why he would want to bring them water to wash their feet; how he would ask them to rest under a tree as if weary from walking; why he requested to strengthen their bodies with refreshment, as if they were laboring in fasting. If anyone seeks to investigate this reading more deeply, he will find it to be full of spiritual senses. For the fact that the Lord appeared to Abraham sitting at the entrance of his tent greatly suits both Abraham's devotion and that of all the heirs of the same promise, who testify that they are strangers and sojourners in this world but truly citizens of another life, that is, of the heavenly homeland. For we use tents in a journey or in war, but a house in our homeland, in which mystery, Isaac and Jacob are also read to have dwelled in tents. He who remains in the midst of his tent, knowing that he is a stranger and not destined to live forever in this world, and yet is not ashamed to engage himself as much as he can in the affairs and allurements of the world, remains. But Abraham and his followers, who conduct the things of the world out of necessity and not out of pleasure, sit as if at the entrance of their tent, because they are ready to leave the world at any moment, always with a joyful mind stretched towards the future rewards and waiting for the entrance into the following life. And it is well added, in the heat of the day; for the heat of the day, in which Abraham was sitting at the entrance of his tent, signifies the virtue of love with which he was burning in his mind with respect towards the Sun of righteousness. And such a state of place and time was fitting for him who was to see the Lord and enjoy His conversation, in which both the sojourner of this world would be figuratively represented, and irradiated by the light of true heavenly grace, and zealously enflamed with the love of divine contemplation.

And when he had lifted up his eyes, he saw three men standing near him; and when he saw them, he ran to meet them from the door of the tent, and worshipped upon the ground, and said: Lord, if I have found grace in thy sight, do not pass by thy servant, etc. The fact that three men appeared to him is a mystery of the Holy Trinity; indeed, when he saw three, he worshipped one, and prayed to the Lord, because although there is a Trinity in persons, there is nevertheless one and co-adorable equality in divinity of the Lord, just as in Isaiah when the angelic hosts were singing the glory of the Holy Trinity, saying: Holy, Holy, Holy, they immediately add the unity of dominion and deity, saying: The Lord God Almighty, the whole earth is full of His glory. And it is fittingly said that Abraham lifted up his eyes to see the angels, because indeed it is necessary that one who wishes to see the citizens of heaven, who desires to know the glory and secrets of the Divine Majesty, should raise every gaze of his mind from lowly desires and with diligent intention open up to the light of the true Sun. It is fittingly added that when he saw the angels, he ran to meet them, worshipping, and asked them not to pass him by, because it is necessary that whenever we conceive any taste of internal sweetness in our soul, we should immediately strive with all our prayers and prompt steps of good works, lest the same sweetness should leave us too quickly; but what is tasted for a time should refresh our minds somewhat longer by the memory of supernal sweetness and suspend them in the contemplation of eternal things, abstracted from the delights and cares of this world. It may perhaps move some that in this reading both Abraham and in the following Lot, having seen the angels, received them as guests as if they were men, and refreshed them with human food as if they were mortals, while yet they spoke with them as with God, and received their words no otherwise than as heavenly oracles. "But it is credible," as Saint Augustine says, "that both Abraham in the three men and Lot in the two men recognized the Lord; to whom they spoke with singular number, even when they considered them to be men. For they received them in no other way than as mortal men and ministered to them with human refreshment as if they were in need; but surely there was something by which they so excelled, though as men, that in them the Lord was present as He is wont to be in prophets, so that those who offered them hospitality could not doubt; and therefore sometimes they called them in the plural, and at other times the Lord in the singular in them. Scripture testifies that they were angels, not only in this book of Genesis where these events are narrated, but also in the Epistle to the Hebrews, where, when hospitality was praised, it says: By this some, being unaware, entertained angels (Heb. XIII, 2)." However, in this reception one can appropriately sense that it was divinely arranged so that the patriarchs, seeing angels, would receive them as men indeed but venerate them as God, so that through the distinction of such service and devotion it would be prefigured that in the future the Lord Himself, appearing in the flesh, would be satisfied with carnal foods and received in human hospitality. In which hospitality, however, He would more be devoted to preaching the gospel and healing the sick than to eating and drinking, as the gospel history often testifies. Finally, the interpreters of the sacred scriptures have understood this place as accomplishing what the Lord said to the Jews: Your father Abraham rejoiced to see my day; and he saw it, and was glad (John VIII, 56). He saw indeed the day of the Lord, when seeing the three angels, he worshipped one, and addressed the Lord, because in the distinction of the three persons, he recognized the essence of one majesty.