Adam Clarke's Commentary on the Bible - Romans 9:9
For this is the word of promise, etc. - That is, this is evidently implied in the promise recorded Genesis 18:10 ; : At this time I will come, saith God, and exert my Divine power, and Sarah, though fourscore and ten years old, shall have a son; which shows that it is the sovereign will and act of God alone, which singles out and constitutes the peculiar seed that was to inherit the promise made to Abraham. It should be considered that the apostle, in this and the following quotations,... read more
Adam Clarke's Commentary on the Bible - Romans 9:8
That is, They which are the children of the flesh - Whence it appears that not the children who descend from Abraham's loins, nor those who were circumcised as he was, nor even those whom he might expect and desire, are therefore the Church and people of God; but those who are made children by the good pleasure and promise of God, as Isaac was, are alone to be accounted for the seed with whom the covenant was established. read more