Doctrine does matter.
God is not going to negotiate His holiness... in order to accommodate us.
The problem in the church today is not the profession of faith, but it's possession.
The only cure for anxiety is to get down on our knees.
Prayer does change things, all kinds of things. But the most important thing it changes is us.
Your task, O preacher, is to make sure that you are faithful to the text, that you are faithful to the proclamation of that gospel, that you are faithful to set forth the whole counsel of God, and then step back and let it happen.