Adam Clarke's Commentary on the Bible - Genesis 17:22
God went up from Abraham - Ascended evidently before him, so that he had the fullest proof that it was no human being, no earthly angel or messenger, that talked with him; and the promise of a son in the course of a single year, at this set time in the next year, Genesis 17:21 , which had every human probability against it, was to be the sure token of the truth of all that had hitherto taken place, and the proof that all that was farther promised should be fulfilled in its due time. Was it... read more
Adam Clarke's Commentary on the Bible - Genesis 17:21
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. read more