God has made the world to display something of his nature and his power, but he also speaks through his witnesses in history. So for St Paul, the habitual ignorance of human beings as a result of the betrayal and fall of the first human beings has to be addressed first by the giving of the Law to Moses. But sadly, this Law has itself become – against God's purpose – another means by which human beings try to get beyond their dependence on God, so that they imagine they can make themselves pleasing to God simply by their own efforts. So God acts once again to overcome this new error and rebellion. He acts in history to open the door to a new possibility for human beings , and he does so in the person of Jesus Christ.
Thus God always seeks to make himself known. God knows that when we fail to see him and know him, we condemn ourselves to a darkness of spirit that means we never become what God wants us to be. So he desires to bring light into that darkness – not only for the sake of human beings but for the good of all creation.
The address in its entirety can be found here: http://www.archbishopofcanterbury.org/2150
