Cast out this bond-woman and her son, &c.— It is evident from what follows, Genesis 21:12 that Sarah acted, in this affair, by a Divine impulse. While, at the same time, the character of Abraham appears in a very amiable light, from the anxious tenderness which he discovers for Hagar and Ishmael; nor can he be charged either with cruelty to them, or with a too uxorious deference to Sarah, when we remark, that he acted entirely by the Divine direction, and upon the certain assurance that Ishmael should live and flourish under the protection of God. See Genesis 21:12-13.
Related Commentaries of Genesis 21:10
Genesis 21:10
10 Wherefore she said unto Abraham, Cast out this bondwoman and her son: for the son of this bondwoman shall not be heir with my son, even with Isaac.