More than in name only, he is a legitimate inheritor of God's very nature. The life Jesus lived on earth was an accurate demonstration of how life is in humanity when God is one's Father. Yet, the controversy over what makes a man a Christian, and how one is saved, still seems to be the argument of the ages. Jesus simply used the example of the lilies of the field and how they are clothed with no work of their own to illustrate God's provision for salvation. He often pointed to natural things to build a picture of the spiritual.
Nature is a great teacher.
I watch deer come into my yard from time to time. I set out salt, and, occasionally, one will venture to the lick and satisfy himself with it. Though he enjoys my bounty, the deer is in rebellion to me. If he sees me coming, he will run. He believes I will hurt him.