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 LutherFrom the beginning of my Reformation I have asked God to send me neither dreams, nor visions, nor angels, but to give me the right understanding of His Word, the Holy Scriptures; for as long as I have God's Word, I know that I am walking in His way and that I shall not fall into any error or delusion.
Martin LutherIn short, I will preach it [the Word], teach it, write it, but I will constrain no man by force, for faith must come freely without compulsion. Take myself as an example. I opposed indulgences and all the papists, but never with force. I simply taught, preached, and wrote God's Word; otherwise I did nothing. And while I slept, or drank Wittenberg beer with my friends Philip and Amsdorf, the Word so greatly weakened the papacy that no prince or emperor ever inflicted such losses upon it. I did nothing; the Word did everything.
Martin LutherPeople must have righteous principals in the first, and then they will not fail to perform virtuous actions.
Martin Luther