 So as many as received him to them, gave he the power to become the sons of God. How do we have the power to become the sons of God? Because Christ is living within us. He's the one who sees that our name is written in the Lamb's book of life. And this is what Paul is saying here. Now, not only that, but one of the reasons that Jesus Christ came to be our life is that he knew that you and I couldn't live the Christian life any other way.