SEV Biblia, Chapter 21:12
Entonces dijo Dios a Abraham: No te parezca grave a causa del muchacho y de tu sierva; en todo lo que te dijere Sara, oye su voz, porque en Isaac te será llamada descendencia.
Clarke's Bible Commentary - Genesis 21:12
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.
Matthew Henry Commentary
Verses 9-13 - Let us not overlook the manner in which this family matter instructs u not to rest in outward privileges, or in our own doings. And let u seek the blessings of the new covenant by faith in its Divine Surety Ishmael's conduct was persecution, being done in profane contempt of the covenant and promise, and with malice against Isaac. God take notice of what children say and do in their play; and will reckon with them, if they say or do amiss, though their parents do not. Mocking in a great sin, and very provoking to God. And the children of promis must expect to be mocked. Abraham was grieved that Ishmael shoul misbehave, and Sarah demand so severe a punishment. But God showed his that Isaac must be the father of the promised Seed; therefore, sen Ishmael away, lest he corrupt the manners, or try to take the rights of Isaac. The covenant seed of Abraham must be a people by themselves, no mingled with those who were out of covenant: Sarah little thought of this; but God turned aright what she said.
Original Hebrew
ויאמר 559 אלהים 430 אל 413 אברהם 85 אל 408 ירע 7489 בעיניך 5869 על 5921 הנער 5288 ועל 5921 אמתך 519 כל 3605 אשׁר 834 תאמר 559 אליך 413 שׂרה 8283 שׁמע 8085 בקלה 6963 כי 3588 ביצחק 3327 יקרא 7121 לך זרע׃ 2233