Paul experiences joy because he understands that he has been commissioned to share a revelation that will transform the world forever. The Gospel is not just for the people of Israel; it is intended as a light to all the nations of the world. This is a foreign concept to the Jewish people, so it is difficult for them to wrap their heads around it. What the Israelites have failed to do in witnessing about God’s glory to the nations, God is about to renew through the church.