Genesis 25:4

The birth of these nations from Abraham partially fulfilled God’s promise to him (12:2; 17:4).

Even though Abraham had sons with another wife, he protected Isaac's inheritance and blessing.

Abraham lived, after the marriage of Isaac, thirty-five years, and all that is recorded concerning him during the time lies here in a very few verses. We hear no more of God's extraordinary appearances to him or trials of him; for all the days, even of the best and greatest saints, are not eminent days, some slide on silently, and neither come nor go with observation; such were these last days of Abraham. We have here,
I. An account of his children by Keturah, another wife whom he married after the death of Sarah. He had buried Sarah and married Isaac, the two dear companions of his life, and was now solitary. He wanted a nurse, his family wanted a governess, and it was not good for him to be thus alone. He therefore marries Keturah, probably the chief of his maid-servants, born in his house or bought with money. Marriage is not forbidden to old age. By her he had six sons, in whom the promise made to Abraham concerning the great increase of his posterity was in part fulfilled, which, it is likely, he had an eye to this marriage. The strength he received by the promise still remained in him, to show how much the virtue of the promise exceeds the power of nature.
II. The disposition which Abraham made of his estate, Gen 25:5, Gen 25:6. After the birth of these sons, he set his house in order, with prudence and justice. 1. He made Isaac his heir, as he was bound to do, in justice to Sarah his first and principal wife, and to Rebekah who married Isaac upon the assurance of it, Gen 24:36. In this all, which he settled upon Isaac, are perhaps included the promise of the land of Canaan, and the entail of the covenant. Or, God having already made him the heir of the promise, Abraham therefore made him heir of his estate. Our affection and gifts should attend God's. 2. He gave portions to the rest of his children, both to Ishmael, though at first he was sent empty away, and to his sons by Keturah. It was justice to provide for them; parents that do not imitate him in this are worse than infidels. It was prudence to settle them in places distant from Isaac, that they might not pretend to divide the inheritance with him, nor be in any way a care or expense to him. Observe, He did this while he yet lived, lest it should not be done, or not so well done, afterwards. Note, In many cases it is wisdom for men to make their own hands their executors, and what they find to do to do it while they live, as far as they can. These sons of the concubines were sent into the country that lay east from Canaan, and their posterity were called the children of the east, famous for their numbers, Jdg 6:5, Jdg 6:33. Their great increase was the fruit of the promise made to Abraham, that God would multiply his seed. God, in dispensing his blessings, does as Abraham did; common blessings he gives to the children of this world, as to the sons of the bond-woman, but covenant-blessings he reserves for the heirs of promise. All that he has is theirs, for they are his Isaacs, from whom the rest shall be for ever separated.
III. The age and death of Abraham, Gen 25:7, Gen 25:8. He lived 175 years, just 100 years after he came to Canaan; so long he was a sojourner in a strange country. Though he lived long and lived well, though he did good and could ill be spared, yet he died at last. Observe how his death is here described. 1. He gave up the ghost. Hes life was not extorted from him, but he cheerfully resigned it; into the hands of the Father of spirits he committed his spirit. 2. He died in a good old age, an old man; so God had promised him. His death was his discharge from the burdens of his age: an old man would not so live always. It was also the crown of the glory of his old age. 3. He was full of years, or full of life (as it might be supplied), including all the conveniences and comforts of life. He did not live till the world was weary of him, but till he was weary of the world; he had had enough of it, and desired no more. Vixi quantum satis est - I have lived long enough. A good man, though he should not die old, dies full of days, satisfied with living here, and longing to live in a better place. 4. He was gathered to his people. His body was gathered to the congregation of the dead, and his soul to the congregation of the blessed. Note, Death gathers us to our people. Those that are our people while we live, whether the people of God or the children of this world, are the people to whom death will gather us.
IV. His burial, Gen 25:9, Gen 25:10. Here is nothing recorded of the pomp or ceremony of his funeral; only we are told, 1. Who buried him: His sons Isaac and Ishmael. It was the last office of respect they had to pay to their good father. Some distance there had formerly been between Isaac and Ishmael; but it seems either that Abraham had himself brought them together while he lived, or at least that his death reconciled them. 2. Where they buried him: in his own burying-place, which he had purchased, and in which he had buried Sarah. Note, Those that in life have been very dear to each other may not only innocently, but laudably, desire to be buried together, that in their deaths they may not be divided, and in token of their hopes of rising together.

Then again Abraham took a wife [15] It seems very absurd that Abraham, who is said to have been dead in his own body thirty-eight years before the decease of Sarah, should, after her death, marry another wife. such an act was, certainly, unworthy of his gravity. Besides, when Paul commends his faith, (Romans 4:19,) he not only asserts that the womb of Sarah was dead, when Isaac was about to be born, but also that the body of the father himself was dead. Therefore Abraham acted most foolishly, if, after the loss of his wife, he, in the decrepitude of old age, contracted another marriage. Further, it is at variance with the language of Paul, that he, who in his hundredth year was cold and impotent, [16] should, forty years afterwards, have many sons. Many commentators, to avoid this absurdity, suppose Keturah to have been the same person as Hagar. But their conjecture is immediately refuted in the context; where Moses says, Abraham gave gifts to the sons of his concubines. The same point is clearly established from 1 Chronicles 1:32. Others conjecture that, while Sarah was yet living, he took another wife. This, although worthy of grave censure, is however not altogether incredible. We know it to be not uncommon for men to be rendered bold by excessive license. Thus Abraham having once transgressed the law of marriage, perhaps, after the dispute respecting Hagar, did not desist from the practice of polygamy. It is also probable that his mind had been wounded, by the divorce which Sarah had compelled him to make with Hagar. Such conduct indeed was disgraceful, or, at least, unbecoming in the holy patriarch. Nevertheless no other, of all the conjectures which have been made, seems to me more probable. If it be admitted, the narrative belongs to another place; but Moses is frequently accustomed to place those things which have precedence in time, in a different order. And though this reason should not be deemed conclusive, yet the fact itself shows an inverted order in the history. [17] Sarah had passed her ninetieth year, when she brought forth her son Isaac; she died in the hundred and twenty-seventh year of her age; and Isaac married when he was forty years old. Therefore, nearly four years intervened between the death of his mother and his nuptials. If Abraham took a wife after this, what was he thinking of, seeing that he had been during so many years accustomed to a single life? It is therefore lawful to conjecture that Moses, in writing the life of Abraham, when he approached the closing scene, inserted what he had before omitted. The difficulty, however, is not yet solved. For whence proceeded Abraham's renovated vigor, [18] since Paul testifies that his body had long ago been withered by age? Augustine supposes not only that strength was imparted to him for a short space of time, which might suffice for Isaac's birth; but that by a divine restoration, it flourished again during the remaining term of his life. Which opinion, both because it amplifies the glory of the miracle, and for other reasons, I willingly embrace. [19] And what I have before said, namely, that Isaac was miraculously born, as being a spiritual seed, is not opposed to this view; for it was especially on his account that the failing body of Abraham was restored to vigor. That others were afterwards born was, so to speak, adventitious. Thus the blessing of God pronounced in the words, "Increase and multiply," which was annexed expressly to marriage, is also extended to unlawful connexions. Certainly, if Abraham married a wife while Sarah was yet alive, (as I think most probable,) his adulterous connection was unworthy of the divine benediction. But although we know not why this addition was made to the just measure of favor granted to Abraham, yet the wonderful providence of God appears in this, that while many nations of considerable importance descended from his other sons, the spiritual covenant, of which the rest also bore the sign in their flesh, remained in the exclusive possession of Isaac.

Ephah, and Epher, etc. - Of these we know no more than of the preceding; an abundance of conjectures is already furnished by the commentators.

And the sons of Midian,.... The fourth son of Abraham by Keturah; he had five sons next mentioned, who were heads of so many tribes or families in Midian: hence we read of five kings of Midian; Numbers 31:8; their names follow:

Ephah, and Epher, and Hanoch, and Abidah, and Eldaah: the two first of these, whom Cleodemus (t) calls Aphra and Apher, and makes them to be sons of Abraham by Keturah, when they were his grandsons, he says, from them the city Aphra, and all Africa, had their names, and that these accompanied Hercules into Lybia, he having married a daughter of Aphra. Ephah is mentioned along with Midian in Isaiah 60:6; but of the rest no notice is taken in Scripture. Ptolemy (u) makes mention both of a mountain, and of a village, near Madiana in Arabia Felix, called Hippos, which perhaps had their name from this man. Some trace of Epher is thought to be in Taphuron which Philostorgius says (w) was the metropolis of the Homerites, before mentioned; and Arrianus, as Bishop Patrick observes, expressly says, the metropolis of the Homerites, is called Aphar: to which may be added, that Ptolemy (x) speaks of a people called Tappharites, near the Homerites. Hanoch, the next son, is thought to have some footsteps of his name in Cane, a mart, which Ptolemy (y) places in the country of the Adramites in Arabia Felix, and also in the country of Canauna in Arabia, mentioned by, Pliny (z): near Cananua is placed, by the same writer, the island Devadae, called by Philostorgius (a) "Divus", in which it is supposed there is some trace of the name of Abidah, by an inversion of the two last syllables; and perhaps also in Abissa, which Ptolemy (b) places in the country of the Sachalites in Arabia Felix. As for Eldaah, Bishop Patrick thinks there are no remains of this name, unless in the city of Elana, from whence there was a gulf called Elanites, and a people that lived there Elanitae; but one would think there are some traces of it in the cities Alata, Lattha, and Leaththa, all, according to Ptolemy (c), in Arabia Felix:

all these were the children of Keturah; her children and grandchildren.

(t) Apud Euseb. ut supra. (Praepar. Evangel. l. 9. c. 20. p. 432.) (u) Ut supra. (Geograph. l. 6. c. 7.) (w) Eccl. Hist. l. 3. sect. 4. 478. (x) Ut supra. (u)) (y) lb. (z) Nat. Hist. l. 6. c. 28. (a) Ut supra, (w)) sect. 3.((b) Ut supra. (u)) (c) lb.

Ephah; of whom see . From Epher some think Africa received its name.

Of the sons of Jokshan, Sheba was probably connected with the Sabaeans, who are associated in Job 6:19 with Tema, are mentioned in Job 1:15 as having stolen Job's oxen and asses, and, according to Strabo (xvi. 779), were neighbours of the Nabataeans in the vicinity of Syria. Dedan was probably the trading people mentioned in Jer 25:23 along with Tema and Bus (Isa 21:13; Jer 49:8), in the neighbourhood of Edom (Eze 24:15), with whom the tribe of Banu Dudan, in Hejas, has been compared. On their relation to the Cushites of the same name, vid., Gen 10:7 and Gen 10:28, - Of the sons of Dedan, the Asshurim have been associated with the warlike tribe of the Asir to the south of Hejas, the Letushim with the Banu Leits in Hejas, and the Leummim with the tribe of the Banu Lm, which extended even to Babylon and Mesopotamia. Of the descendants of Midian, Ephah is mentioned in Isa 60:6, in connection with Midian, as a people trading in gold and incense. Epher has been compared with the Banu Gifar in Hejas; Hanoch, with the place called Hanakye, three days' journey to the north of Medinah; Abidah and el-daah, with the tribes of Abide and Vadaa in the neighbourhood of Asir. But all this is very uncertain.