Whoops...you almost snuck that past me... :-)
The church is under the new covenant and IS part of that covenant through Christ. Israel (physical Israelites and NOT necessarily a nation) have been blinded until the fullness of the gentiles has come in.
As Paul said:
Eph 2:11 Therefore remember that you, once Gentiles in the fleshwho are called Uncircumcision by what is called the Circumcision made in the flesh by hands
Eph 2:12 that at that time you were without Christ, being aliens from the commonwealth of Israel and strangers from the covenants of promise, having no hope and without God in the world.
Eph 2:13 But now in Christ Jesus you who once were far off have been brought near by the blood of Christ.
So which one of God’s promises to the nation of Israel was a lie?