If you Believe the Word and receive him, Jesus, you are given the Right.

Yet to all who received him, to those who believed in his name, he gave the right to become children of God.
John 1:12

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. For in the Gospel a righteousness that is by faith from first to last, just as it is written: "The righteous will live by faith"
Romans 1:16-17