Romans 15:8 For I tell you that Christ has become a servant of the Jews on behalf of God’s truth, so that the promises made to the patriarchs might be confirmed
Jesus was sent by God to save the world. The world, as spoken of in the bible by the Jews, was Israel. Here Paul is reminding us of Jesus’ words when He said He had come for the lost Jews.
So what about the rest of us? Jesus was actually sent to the Jews as proof of a Messiah being sent. Their belief is what has spread as Jesus told them to go out and spread the gospel.
God’s plan was very specific and targeted. We should have a plan to work for Christ which is equally specific so we can focus on that plan!