But unto the sons of the concubines, whom Abraham had, Abraham gave gifts, and sent them away from Isaac his son, while he yet lived, eastward, unto the east country.
Read Chapter 25
Augustine of Hippo
AD 430
If then we are the sons of the free Jerusalem, let us realize that some gifts belong to those who are disinherited; others, to the heirs. For they are heirs to whom it is said, “You have not received a spirit of bondage so as to be again in fear, but you have received a spirit of adoption as sons, by virtue of which we cry: ‘Abba! Father!’ ” On Patience
Concubines. Agar and Cetura are here called concubines, (though they were lawful wives, and in other places are so called) because they were of an inferior degree: and such in Scripture are usually called concubines. (Challoner)
The solemnities of marriage were omitted on these occasions, and the children were not entitled to a share in the inheritance. Jacob's two wives consented that all his children, by their handmaids, should be placed on the same footing with their own. (Calmet)
Abraham contented himself with making suitable presents to the children, whom he had by these secondary wives, reserving the bulk of his property to Isaac, chap. xxiv. 36. He also provided for their establishment himself, that there might be no contest after his departure.
