What then shall we say of Abraham, our ancestor in the flesh?

For if Abraham was justified by works, he has something to be proud of, but not before God.

For what does Scripture say? And Abraham believed God, and it was set down to his account as righteousness.

Is this blessing, then, for the circumcised alone? or for the uncircumcised also? Abraham's faith, I say, was imputed to him for righteousness.

He is the father of circumcision to those who are not merely circumcised, but who also walk in the steps of that faith of our father Abraham which he held while he was as yet uncircumcised.

For the promise that he should be heir of the world did not come to Abraham or to his posterity through law, but through faith-righteousness.

This is why righteousness is of faith, that it may be a free gift; so that the promise stands firm to all Abraham's posterity; not to his children of his faith. For in the sight of the God in whom he believed, who gives life to the dead, and calls into being that which is not, Abraham is the father of us all both Jews and Gentiles,

For Abraham, hoping against hope, had faith to the end that he might become a father of many nations, according to that which had been spoken, So numberless shall your descendants be.

they are not all children of Abraham because they are Abraham's descendants. The promise was, In Isaac shall thy posterity be called.

Then I ask, Did God cast off his people? No indeed. For I also am an Israelite, a son of Abraham, a member of the tribe of Benjamin.

Now if the first-fruits of the dough Abraham and the Patriarchs are holy, so also is the whole mass their descendants. And if the root of a tree Abraham is holy, so also are the branches his descendants.