“By faith Abraham, when he was tried, offered up Isaac: and he that had received the promises offered up his only begotten son,”
King James Version (KJV)
11:17 By faith Abraham - When God made that glorious trial of him. Offered up Isaac - The will being accepted as if he had actually done it. Yea, he that had received the promises - Particularly that grand promise, In Isaac shall thy seed be called. Offered up - This very son; the only one he had by Sarah. #Gen 22:1|,&c.
Heb 11:17 By faith Abraham, when he was tried. See Ge 22:1-14. Offered up Isaac . . . his only begotten [son]. Abraham stands as the great Old Testament example of faith, "the Father of the faithful", the man whose faith was "counted for righteousness" (Ro 4:5). Hence his faith was tried by the sternest test of any Man of God on record, not that God might be certain of his faith, but that all his spiritual children should profit by his example. Note: (1) Isaac was the only child of his marriage; (2) he was the child of promise and by grace; (3) he was the heir, not only of Abraham but of all God's promises to Abraham. Yet Abraham was told to offer him. It was God's command. What a trial of faith! Yet, he believed, though he would not see how, that God would keep his promises.