That’s true - for Gentiles. We are not a people of the same tribal blood. We substitute the blood of Christ to enter into the family.
Are you saying that Christ came for the gentiles but not for the Jews?

This is certainly not what the Church teaches. Christ came from EVERYBODY and ALL, that is even the Gentiles, must believe in him.
John 14:6-7
“I am
the way and **the truth **and
the life.
No one comes to the Father except through me. If you really knew me, you would know my Father as well. From now on, you do know him and have seen him.”
John 15:5-6
“If a man remains in me and I in him, he will bear much fruit;
apart from me you can do nothing.
If anyone does not remain in me, he is like a branch that is thrown away and withers; such branches are picked up,
thrown into the fire and burned.”
There is only one Covenant for the Old was replaced by the New. The Saviour came for the Jews first and then the Gentiles. He is the savior the Jew were always expecting. They were expecting a savior of the Gentiles but their own Saviour (as well as of the Gentiles).
Romans 1:16
“I am not ashamed of the gospel, because it is the power of God for the salvation of everyone who believes: first for the Jew, then for the Gentile.”
And let me remind you of one thing, the Jew weren’t saved by the Law. It is by Christ death and resurrection that we are granted eternal life. Under the Old Covenant there was no such thing. Are you saying that Jews are saved by Christ but don’t have to acknowledge him to obtain salvation from Him?
Council of Trent: Session 6, Canon 1: If anyone shall say that man can be justified before God by his own works which are done either by his own natural powers, or through the teaching of the Law, and without divine grace through Christ Jesus: let him be anathema.
Council of Trent: Session 6, Chapter 1: but not even the Jews by the very letter of the law of Moses were able to be liberated or to rise therefrom, although free will was not extinguished in them, however weakened and debased in its powers.