Romans 11:25 For I do not want you, brethren, to be uninformed of this mystery—so that you will not be wise in your own estimation—that a partial hardening has happened to Israel until the fullness of the Gentiles has come in.
“The Deliverer will come from Zion,
He will remove ungodliness from Jacob.” 27 “This is My covenant with them, When I take away their sins.” It is no mystery that in showing the great of God, the greatness of God in the Person of the Son would be close by in this passage. Jesus Christ is the full revelation of God, being "The Word made flesh" (John 1:14); God manifested in the flesh (1 Timothy 3:16) and the soon coming Great God and Savior, Jesus Christ (Titus 2:13). Israel's destiny in ultimately being saved is relevant because it points us to the Greatness of God. But now notice a second reason how Israel is relevant to the Christian...
I will now say, “May peace be within you.” 9 For the sake of the house of the Lord our God, I will seek your good."