Genesis 21:5-12

Verse 6

God hath made me to laugh - Sarah alludes here to the circumstance mentioned Gen 18:12; and as she seems to use the word to laugh in this place, not in the sense of being incredulous but to express such pleasure or happiness as almost suspends the reasoning faculty for a time, it justifies the observation on the above-named verse. See a similar case in Luk 24:41, where the disciples were so overcome with the good news of our Lord's resurrection, that it is said, They believed not for joy.
Verse 8

The child grew and was weaned - Anglo-Saxon Version. Now the child waxed and became weaned. We have the verb to wean from the Anglo-Saxon awendan, to convert, transfer, turn from one thing to another, which is the exact import of the Hebrew word גמל gamal in the text. Hence wenan, to wean, to turn the child from the breast to receive another kind of ailment. And hence, probably, the word Wean, a young child, which is still in use in the northern parts of Great Britain and Ireland, and which from its etymology seems to signify a child taken from the breast; surely not from the Scotch wee-ane, a little one, much less from the German wenig, little, as Dr. Johnson and others would derive it. At what time children were weaned among the ancients, is a disputed point. St. Jerome says there were two opinions on this subject. Some hold that children were always weaned at five years of age; others, that they were not weaned till they were twelve. From the speech of the mother to her son, 2 Maccabees 7:27, it seems likely that among the Jews they were weaned when three years old: O my son, have pity upon me that bare thee nine months in my womb, and gave thee Suck Three Years, and nourished thee and brought thee up. And this is farther strengthened by 2Chr 31:16, where Hezekiah, in making provision for the Levites and priests, includes the children from three years old and upwards; which is a presumptive proof that previously to this age they were wholly dependent on the mother for their nourishment. Samuel appears to have been brought to the sanctuary when he was just weaned, and then he was capable of ministering before the Lord, 1Sam 1:22-28; and this certainly could not be before he was three years of age. The term among the Mohammedans is fixed by the Koran, chap. 31:14, at two years of age.
Verse 9

Mocking - What was implied in this mocking is not known. St. Paul, Gal 4:29, calls it persecuting; but it is likely he meant no more than some species of ridicule used by Ishmael on the occasion, and probably with respect to the age of Sarah at Isaac's birth, and her previous barrenness. Jonathan ben Uzziel and the Jerusalem Targum represent Ishmael as performing some idolatrous rite on the occasion, and that this had given the offense to Sarah. Conjectures are as useless as they are endless. Whatever it was, it became the occasion of the expulsion of himself and mother. Several authors are of opinion that the Egyptian bondage of four hundred years, mentioned Gen 15:13, commenced with this persecution of the righteous seed by the son of an Egyptian woman.
Verse 10

Cast out this bondwoman and her son - Both Sarah and Abraham have been accused of cruelty in this transaction, because every word reads harsh to us. Cast out; גרש garash signifies not only to thrust out, drive away, and expel, but also to divorce; (see Lev 21:7); and it is in this latter sense the word should be understood here. The child of Abraham by Hagar might be considered as having a right at least to a part of the inheritance; and as it was sufficiently known to Sarah that God had designed that the succession should be established in the line of Isaac, she wished Abraham to divorce Hagar, or to perform some sort of legal act by which Ishmael might be excluded from all claim on the inheritance.
Verse 12

In Isaac shall thy seed be called - Here God shows the propriety of attending to the counsel of Sarah; and lest Abraham, in whose eyes the thing was grievous, should feel distressed on the occasion, God renews his promises to Ishmael and his posterity.
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