SEV Biblia, Chapter 17:21 Mas yo estableceré mi pacto con Isaac, el cual te dará a luz Sara en este tiempo el año siguiente.
Clarke's Bible Commentary - Genesis 17:21 Verse 21. My covenant will I establish with Isaac] All temporal good things are promised to Ishmael and his posterity, but the establishment of the Lord's covenant is to be with Isaac. Hence it is fully evident that this covenant referred chiefly to spiritual things - to the Messiah, and the salvation which should be brought to both Jews and Gentiles by his incarnation, death, and glorification.
Matthew Henry Commentary Verses 15-22 - Here is the promise made to Abraham of a son by Sarai, in whom the promise made to him should be fulfilled. The assurance of this promis was the change of Sarai's name into Sarah. Sarai signifies my princess as if her honour were confined to one family only; Sarah signifies princess. The more favours God confers upon us, the more low we shoul be in our own eyes. Abraham showed great joy; he laughed, it was laughter of delight, not of distrust. Now it was that Abraham rejoice to see Christ's day; now he saw it and was glad, Joh 8:56. Abraham dreading lest Ishmael should be abandoned and forsaken of God, put up petition on his behalf. God gives us leave in prayer to be particula in making known our requests. Whatever is our care and fear, should be spread before God in prayer. It is the duty of parents to pray for their children, and the great thing we should desire is, that they ma be kept in covenant with Him, and may have grace to walk before him in uprightness. Common blessings are secured to Ishmael. Outward goo things are often given to those children of godly parents who are bor after the flesh, for their parents' sake. Covenant blessings ar reserved for Isaac, and appropriated to him.
Original Hebrew ואת 853 בריתי 1285 אקים 6965 את 854 יצחק 3327 אשׁר 834 תלד 3205 לך שׂרה 8283 למועד 4150 הזה 2088 בשׁנה 8141 האחרת׃ 312