Genesis 26:27

This oath is like the one a previous king made with Abraham (see 21:22–31). This king acknowledged that God was blessing Isaac. He understood that an oath with Isaac would be beneficial.

No opposition can stop God's blessing. It will flourish, and other nations will notice it. They will seek peace with God's people to share in the blessing.

This section pauses Jacob’s story to focus on Isaac. Isaac’s success and wealth in chapter 26 show that God’s blessing had passed to him (compare 25:11), even though he sometimes failed to trust God.

Then Abimelech went to him--As there was a lapse of ninety years between the visit of Abraham and of Isaac, the Abimelech and Phichol spoken of must have been different persons' official titles. Here is another proof of the promise (Gen 12:2) being fulfilled, in an overture of peace being made to him by the king of Gerar. By whatever motive the proposal was dictated--whether fear of his growing power, or regret for the bad usage they had given him, the king and two of his courtiers paid a visit to the tent of Isaac (Pro 16:7). His timid and passive temper had submitted to the annoyances of his rude neighbors; but now that they wish to renew the covenant, he evinces deep feeling at their conduct, and astonishment at their assurance, or artifice, in coming near him. Being, however, of a pacific disposition, Isaac forgave their offense, accepted their proposals, and treated them to the banquet by which the ratification of a covenant was usually crowned.

We have here the contests that had been between Isaac and the Philistines issuing in a happy peace and reconciliation.
I. Abimelech pays a friendly visit to Isaac, in token of the respect he had for him, Gen 26:26. Note, When a man's ways please the Lord he makes even his enemies to be at peace with him, Pro 16:7. King's hearts are in his hands, and when he pleases he can turn them to favour his people.
II. Isaac prudently and cautiously questions his sincerity in this visit, Gen 26:27. Note, In settling friendships and correspondences, there is need of the wisdom of the serpent, as well as the innocence of the dove; nor is it any transgression of the law of meekness and love plainly to signify our strong perception of injuries received, and to stand upon our guard in dealing with those that have acted unfairly.
III. Abimelech professes his sincerity, in this address to Isaac, and earnestly courts his friendship, Gen 26:28, Gen 26:29. Some suggest that Abimelech pressed for this league with him because he feared lest Isaac, growing rich, should, some time or other, avenge himself upon them for the injuries he had received. However, he professes to do it rather from a principle of love. 1. He makes the best of their behaviour towards him. Isaac complained they had hated him, and sent him away. No, said Abimelech, we sent thee away in peace. They turned him off from the land he held of them; but they suffered him to take away his stock, and all his effects, with him. Note, The lessening of injuries is necessary to the preserving of friendship; for the aggravating of them exasperates and widens breaches. The unkindness done to us might have been worse. 2. He acknowledges the token of God's favour to him, and makes this the ground of their desire to be in league with him: The Lord is with thee, and thou art the blessed of the Lord. As if he had said, "Be persuaded to overlook and pass by the injuries offered thee; for God had abundantly made up to thee the damage thou receivedst." Note, Those whom God blesses and favours have reason enough to forgive those who hate them, since the worst enemy they have cannot do them any real hurt. Or, "For this reason we desire thy friendship, because God is with thee." Note, It is good to be in covenant and communion with those who are in covenant and communion with God, Jo1 1:3; present address to him was the result of mature deliberation: We said, Let there be an oath between us. Whatever some of his peevish envious subjects might mean otherwise, he and his prime-ministers of state, whom he had now brought with him, designed no other than a cordial friendship. Perhaps Abimelech had received, by tradition, the warning God gave to his predecessor not to hurt Abraham (Gen 20:7), and this made him stand in such awe of Isaac, who appeared to be as much the favourite of Heaven as Abraham was.
IV. Isaac entertains him and his company, and enters into a league of friendship with him, Gen 26:30, Gen 26:31. Here see how generous the good man was, 1. In giving: He made them a feast, and bade them welcome. (2.) In forgiving. He did not insist upon the unkindnesses they had done him, but freely entered into a covenant of friendship with them, and bound himself never to do them any injury. Note, Religion teaches us to be neighbourly, and, as much as in us lies, to live peaceably with all men.
V. Providence smiled upon what Isaac did; for the same day that he made this covenant with Abimelech his servants brought him the tidings of a well of water they had found, Gen 26:32, Gen 26:33. He did not insist upon the restitution of the wells which the Philistines had unjustly taken from him, lest this should break off the treaty, but sat down silent under the injury; and, to recompense him for this, immediately he is enriched with a new well, which, because it suited so well to the occurrence of the day, he called by an old name, Beer-sheba, The well of the oath.

And Isaac said unto them, Wherefore come ye to me? Isaac not only expostulates concerning injuries received, but protests that in future he can have no confidence in them, since he had found in them a disposition so hostile to himself. This passage teaches us, that it is lawful for the faithful to complain of their enemies, in order, if possible, to recall them from their purpose of doing injury, and to restrain their force, frauds, and acts of injustice. For liberty is not inconsistent with patience: nor does God require of his own people, that they should silently digest every injury which may be inflicted upon them, but only that they should restrain their minds and hands from revenge. [41] Now, if their minds are pure and well regulated, their tongues will not be virulent in reproaching the faults of others; but their sole purpose will be to restrain the wicked by a sense of shame from iniquity. For where there is no hope of profiting by complaints, it is better to cherish peace by silence; unless, perhaps, for the purpose of rendering those who delight themselves in wickedness inexcusable. We must, indeed, always beware, lest, from a desire of vengeance, our tongues break out in reproaches; and, as Solomon says, hatred stirreth up strifes. (Proverbs 10:12.)

Seeing ye hate me - He was justified in thinking thus, because if they did not injure him, they had connived at their servants doing it.

And Isaac said unto them, wherefore come ye to me,.... What is the meaning of this visit? what has brought you hither? it cannot be from affection and friendship to me:

seeing ye hate me, and have sent me away from you? the latter he mentions as a proof of the former; they envied his prosperity, and hated him on that account, and therefore expelled him their country, or at least would not suffer him to dwell among them; and still more glaring proofs were given of the hatred of the men of Gerar to him, not only by stopping up his father's wells, but by striving and contending with him about those he dug in the valley after he was gone from them; one of which he called "Sitnah", from their hatred of him.

Abimelech's Treaty with Isaac. - The conclusion of this alliance was substantially only a repetition of renewal of the alliance entered into with Abraham; but the renewal itself arose so completely out of the circumstances, that there is no ground whatever for denying that it occurred, or for the hypothesis that our account is merely another form of the earlier alliance; to say nothing of the fact, that besides the agreement in the leading event itself, the attendant circumstances are altogether peculiar, and correspond to the events which preceded. Abimelech not only brought his chief captain Phicol (supposed to be the same as in Gen 21:22, if Phicol is not also an official name), but his מרע "friend," i.e., his privy councillor, Ahuzzath. Isaac referred to the hostility they had shown; to which Abimelech replied, that they (he and his people) did not smite him (נגע), i.e., drive him away by force, but let him depart in peace, and expressed a wish that there might be an oath between them. אלה the oath, as an act of self-imprecation, was to form the basis of the covenant to be made. From this אלה came also to be used for a covenant sanctioned by an oath (Deu 29:11, Deu 29:13). תּעשׂה אם "that thou do not:" אם a particle of negation used in an oath (Gen 14:23, etc.). (On the verb with zere, see Ges. 75, Anm. 17; Ewald, 224.) - The same day Isaac's servants informed him of the well which they had dug; and Isaac gave it the name Shebah (שׁבעה, oath), in commemoration of the treaty made on oath. "Therefore the city was called Beersheba." This derivation of the name does not shut the other (Gen 21:31) out, but seems to confirm it. As the treaty made on oath between Abimelech and Isaac was only a renewal of his covenant concluded before with Abraham, so the name Beersheba was also renewed by the well Shebah. The reality of the occurrence is supported by the fact that the two wells are in existence still (vid., Gen 21:31).