From John Piper's Book The Supremacy of God in Preaching:
The greatness and the glory of God are relevant. It does not matter if surveys turn up a list of perceived needs that does not include the supreme greatness of the sovereign God of grace. That is the deepest need. People are starving for God. So I am persuaded that the vision of a great God is the lynchpin in the life of the church, both in pastoral care and missionary outreach. Our people need to hear God-entranced preaching. They need someone, at least once a week, to lift up his voice and magnify the supremacy of God. They need to behold the whole panorama of his excellencies.