Romans 4:11-12
And he received the sign of circumcision, a seal of the righteousness of the faith which he had while in uncircumcision; that he might be father of all who believe while in uncircumcision, that the righteousness might be reckoned to them;
Matthew 22:32
'I am the God of Abraham, and the God of Isaac, and the God of Jacob?' He is not the God of the dead, but of the living."
Romans 11:25
For I do not wish you, brethren, to be ignorant of this mystery (lest ye be wise in your own conceits), that a hardening, in part, has befallen Israel, until the fulness of the gentiles come in;
Galatians 3:29
And, if ye are Christ's, ye are, consequently, Abraham's seed, and heirs according to promise.