For if Abraham was justified by works, he has something to boast about, but not toward God.

Without being weakened in faith, he didn't consider his own body, already having been worn out, (he being about a hundred years old), and the deadness of Sarah's womb.

What then shall we say about these things? If God is for us, who can be against us?

For I testify about them that they have a zeal for God, but not according to knowledge.

For Moses writes about the righteousness of the law, "The one who does them will live by them."

God didn't reject his people, which he foreknew. Or don't you know what the Scripture says about Elijah? How he pleads with God against Israel:

I myself am also persuaded about you, my brothers, that you yourselves are full of goodness, filled with all knowledge, able also to admonish others.