To be fully Christian, in other words, is to live. It is to be fully human. And this is no callow or easily bought testimony. We hear this from some of the most luminous and titanic minds ever to appear on the human scene as well as from peasants, shopkeepers, kings, hermits, Easterners, Westerners, Africans, Americans, and people of all other sorts and conditions. They all say that to have followed Christ the Savior is to have been brought to wholeness, freedom, and joy, most of them through great struggle and pain. We do not hear from them that to have known Christ is to have escaped from their humanness. On the contrary, it is to have become human, since the One they have followed is, so they say, the one perfectly whole, free, and good man ever to have lived. He was all of that because, they say, he was Immanuel: God with us. He was the Second Adam, that is, the perfect example of all that humanity was meant to be.
From: Christianity: The True Humanism by J. I. Packer and Thomas Howard (Waco: Word Books, Publisher, 1985), p. 41.