Genesis 25:6

Unto the sons of the concubines - Viz., Hagar and Keturah, Abraham gave gifts. Cattle for breed, seed to sow the land, and implements for husbandry, may be what is here intended.

And sent them away - while he yet lived - Lest after his death they should dispute a settlement in the Land of Promise with Isaac; therefore he very prudently sent them to procure settlements during his lifetime, that they might be under no temptation to dispute the settlement with Isaac in Canaan. From this circumstance arose that law which has prevailed in almost all countries, of giving the estates to the eldest son by a lawful wife; for though concubines, or wives of the second rank, were perfectly legitimate in those ancient times, yet their children did not inherit, except in case of the failure of legal issue, and with the consent of the lawful wife; and it is very properly observed by Calmet, that it was in consequence of the consent of Leah and Rachel that the children of their slaves by Jacob had a common and equal lot with the rest. By a law of Solon all natural children were excluded from the paternal inheritance, but their fathers were permitted to give them any sum not beyond a thousand drachma by way of present. Eastward, unto the east country - Arabia Deserta, which was eastward of Beer-sheba, where Abraham lived.

25:6 He gave gifts - Or 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 that, 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. He did this while he yet lived, lest it should not have been done, or not so well done afterwards. 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. 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. Their great increase was the fruit of the promise made to Abraham, that God would multiply his seed.