Romans 4:11-12
and he received circumcision as a sign, a seal of the faith-righteousness which he had while he was in uncircumcision; in order that he might be the father of all who believe, even though they are uncircumcised; so that righteousness might be imputed to them.
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, my brothers, have you ignorant of this hidden truth, for fear that you become wise in your own conceits. that a hardening in part has befallen Israel, until the fulness of the Gentiles is come in.
Galatians 3:29
And if you belong to Christ, then you are the descendants of Abraham, heirs according to the promise.