Also Matthew 8 8-12. The Roman soldier meets Jesus and believes. Jesus himself says there will be more gentiles than Jews in heaven.Romans 11:11-36 is a long detailed essay about non Jewish people being grafted into the people of GOD. It also explains some of those who are Jews by birth are broken off.
John 10:16 Jesus states that he has sheep from another sheepfold, that are under him as the great shepherd, pointing to non Jews.