And he said to the elder servant of his house, who was ruler over all he had: Put thy hand under my thigh,

And Abraham said to his servant, the eldest of his house, who ruled over all that he had, Put thy hand, I pray thee, under my thigh,

and Abraham saith unto his servant, the eldest of his house, who is ruling over all that he hath, 'Put, I pray thee, thy hand under my thigh,

And Abraham said to his chief servant, the manager of all his property, Come now, put your hand under my leg:

And he said to the elder servant of his house, who was in charge of all that he had: "Place your hand under my thigh,

Et dixit Abraham ad servum suum seniorem domus suae, qui praeerat omnibus qui erant ei, Pone nunc manum tuam sub femore meo:

And Abraham said unto his eldest servant. Abraham here fulfils the common duty of parents, in laboring for and being solicitous about the choice of a wife for his son: but he looks somewhat further; for since God had separated him from the Canaanites by a sacred covenant, he justly fears lest Isaac, by joining himself in affinity with them, should shake off the yoke of God. Some suppose that the depraved morals of those nations were so displeasing to him, that he conceived the marriage of his son must prove unhappy if he should take a wife from among them. But the special reason was, as I have stated, that he would not allow his own race to be mingled with that of the Canaanites, whom he knew to be already divinely appointed to destruction; yea, since upon their overthrow he was to be put into possession of the land, he was commanded to treat them with distrust as perpetual enemies. And although he had dwelt in tranquility among them for a time, yet he could not have a community of offspring with them without confounding things which, by the command of God, were to be kept distinct. Hence he wished both himself and his family to maintain this separation entire. Put, I pray thee, thy hand. It is sufficiently obvious that this was a solemn form of swearing; but whether Abraham had first introduced it, or whether he had received it from his fathers, is unknown. The greater part of Jewish writers declare that Abraham was the author of it; because, in their opinion, this ceremony is of the same force as if his servant had sworn by the sanctity of the divine covenant, since circumcision was in that part of his person. But Christian writers conceive that the hand was placed under the thigh in honor of the blessed seed. [1] Yet it may be that these earliest fathers had something different in view; and there are those among the Jews who assert that it was a token of subjection, when the servant was sworn on the thigh of his master. The more plausible opinion is, that the ancients in this manner swore by Christ; but because I do not willingly follow uncertain conjectures, I leave the question undecided. Nevertheless the latter supposition appears to me the more simple; namely, that servants, when they swore fidelity to their lords, were accustomed to testify their subjection by this ceremony, especially since they say that this practice is still observed in certain parts of the East. That it was no profane rite, which would detract anything from the glory of God, we infer from the fact that the name of God is interposed. It is true that the servant placed his hand under the thigh of Abraham, but he is adjured by God, the Creator of heaven and earth; and this is the sacred method of adjuration, whereby God is invoked as the witness and the judge; for this honor cannot be transferred to another without casting a reproach upon God. Moreover, we are taught, by the example of Abraham, that they do not sin who demand an oath for a lawful cause; for this is not recited among the faults of Abraham, but is recorded to his peculiar praise. It has already been shown that the affair was of the utmost importance, since it was undertaken in order that the covenant of God might be ratified among his posterity. He was therefore impelled, by just reasons, most anxiously to provide for the accomplishment of his object, by taking an oath of his servant: and beyond doubt, the disposition, and even the virtue of Isaac, were so conspicuous, that in addition to his riches, he had such endowments of mind and person, that many would earnestly desire affinity with him. His father, therefore, fears lest, after his own death, the inhabitants of the land should captivate Isaac by their allurements. Now, though Isaac has hitherto steadfastly resisted those allurements, the snares of which few young men escape, Abraham still fears lest, by shame and the dread of giving offense, he may be overcome. The holy man wished to anticipate these and similar dangers, when he bound his servant to fidelity, by interposing an oath; and it may be that some secret necessity also impelled him to take this course.

Footnotes

1 - Under my thigh. "A sign which Jacob also required of his son Joseph, (Genesis 47:29,) either to signify subjection, or for a further mystery of the covenant of circumcision, or rather of Christ the promised seed, who was to come out of Abraham's loins or thigh." -- Ainsworth.

Eldest servant - As this eldest servant is stated to have been the ruler over all that he had, it is very likely that Eliezer is meant. See Genesis 15:2, Genesis 15:3.
Put, I pray thee, thy hand - See note on Genesis 24:9.

And Abraham said unto his eldest servant of his house, that ruled over all that he had, (a) Put, I pray thee, thy hand under my thigh:
(a) Which ceremony declared, the servants obedience towards his master, and the master's power over the servant.

And Abraham said unto his eldest servant of his house,.... To Eliezer his servant, according to the Targum of Jonathan, and as is generally thought; and who may well be called an old servant, and his oldest servant, since he must have lived with him fifty years and upwards; one may trace him near sixty years in Abraham's family, and it is highly probable he lived much longer; he was his servant when he had the vision between the pieces, Genesis 15:2; and then he was the steward of his house, and bid fair to be his heir; which was some time before Hagar was given to Abraham; and Ishmael his son by Hagar was fourteen years of age when Isaac was born, and he was now forty years old, which make fifty five years, or thereabout. Bishop Usher places the vision of the pieces in A. M. 2092, and the marriage of Isaac in 2148, some fifty six years from each other; and so long Eliezer, if he is the servant here meant, must have been in Abraham's family, and how much longer cannot with certainty be said:
that ruled over all that he had; had the care and management of his house, and the affairs of it under him; this agrees with the character of Eliezer in Genesis 15:2,
put, I pray thee, thy hand under my thigh: as a token of his subjection to him as a servant, and of his readiness, willingness, and fidelity to execute any commands he should lay upon him, and in order to take an oath, as appears by what follows; for it seems this rite was used in swearing, and is still used in India, as Aben Ezra affirms; and some say among the Ethiopians. The Jewish writers are pretty much of opinion that respect is had to the covenant of circumcision, by which Abraham made his servant to swear, which is not likely: rather respect is had to his seed, the promised Messiah, that should spring from his thigh, by whom the adjuration was made, as follows: though Dr. Clayton (k) thinks this is no other than an equivalent term for approaching in an humble servile manner, and means no more than "come near me", and I will make thee swear; and that, as a respectable method of approach with the Egyptian, as Herodotus (l) relates, was by bowing the body reciprocally when they met, and saluted one another, and by carrying their hands to each other's knee; so some such like ceremony as embracing the knee, and putting the hand under or round the thigh, might be used by servants when they approached their masters; but it should be observed, that this same rite or ceremony was required of Joseph, governor of Egypt, by his father Jacob; see Genesis 47:29.
(k) Chronology of the Hebrew Bible, p. 130, 131. (l) Euterpe sive, l. 2.

said unto his eldest servant--Abraham being too old, and as the heir of the promise not being at liberty to make even a temporary visit to his native land, was obliged to intrust this delicate mission to Eliezer, whom, although putting entire confidence in him, he on this occasion bound by a solemn oath. A pastoral chief in the present day would follow the same course if he could not go himself.

His eldest servant - Probably Eliezer of Damascus, one whose conduct and affection he had had long experience of: he trusted him with this great affair, and not Isaac himself, because he would not have Isaac go at all into that country, but marry thither by proxy; and no proxy so fit as the steward of his house. This matter is settled between the master and the servant with a great deal of care and solemnity. The servant is bound by an oath to do his utmost to get a wife for Isaac among his relations, Genesis 24:3-4. Abraham swears him to it, both for his own satisfaction, and for the engagement of his servant to all possible care and diligence. Thus God swears his servants to their work, that, having sworn, they may perform it. Swearing being an ordinance, not peculiar to the church, but common to mankind, is to be performed by such signs as are the common usages of our country.