Genesis 25:6

But unto the (b) sons of the (c) concubines, which Abraham had, Abraham (d) gave gifts, and sent them away from Isaac his son, while he yet lived, eastward, unto the east country.

(b) For by virtue of God's word he not only had Isaac, but begat many more.

(c) See (Genesis 22:24).

(d) To avoid the disputing that otherwise might have come because of the heritage.