It is not necessary for a preacher to express all his thoughts in one sermon. A preacher should have three principles: first, to make a good beginning, and not spend time with many words before coming to the point; secondly, to say that which belongs to the subject in chief, and avoid strange and foreign thoughts; thirdly, to stop at the proper time.
Martin LutherEven if all the world were to combine forces, they could not bring about the conception of a single child in any woman's womb nor cause it to be born; that is wholly the work of God.
Martin Luther