Acts 21:24
taking these to yourself, be purified with them, and incur expense for them, that they may shave their heads; and all will know that there is nothing in those things of which they have been instructed concerning you; but that you yourself also are walking orderly, keeping the law.
Romans 11:7-10
What, then? What Israel is seeking for, this he did not obtain; but the election obtained it, and the rest were hardened;
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;
2 Corinthians 4:3-4
And, even if our Gospel has been veiled, it has been veiled in those who perish;