Power of the Gospel

There are so many things that each one of us in our lives has been ashamed of, but Paul specifically says that he is not ashamed of the Gospel. Why is that? We are ashamed of things when we invest our identity and our hope in them and they fail us. The Gospel doesn't fail us. We feel shame when we invest our hope in our own attempts to be good enough and inevitably fail. When we invest our identity and hope in the Gospel we are not put to shame because we are being given the finished, perfect righteousness of God.