Romans 4:11-12
And he received the sign of circumcision, as a seal of the righteousness of the faith which he had when uncircumcised: that he might be the father of all those who believe, though uncircumcised; that to them also the righteousness might be imputed:
Matthew 22:32
"I am the God of Abraham, and the God of Isaac, and the God of Jacob?" God is not the God of the dead, but of the living.
Romans 11:25
For I would not that you should be ignorant, brethren, of this mystery, lest ye should be wise in your own conceits; that blindness in part is come on Israel, until the fulness of the Gentiles be come in.
Galatians 3:29
But if ye are Christ's, then are ye Abraham's seed, and heirs according to the promise.