God would not have you think that you are impressed by His Spirit when you fly from your subject, bringing in foreign matters which are designed as a reproof, and which should not be named in connection with the words of solemn and sacred truth. By doing this, you lose your bearings, and weaken the effect of that which is profitable for doctrine, for reproof, for correction, for instruction in righteousness. You have made of none effect many precious ideas, by mixing them with other thoughts which have come to your mind but which had no bearing upon the subject. That which is far from the subject under consideration should find no place in your discourses. TM 309.2
There are in this world hearts that are crying aloud for the living God. But helpless human nature has been fed with distasteful food; discourses dissatisfying to hungry, starving souls have been given in the churches. In these discourses there is not that divine manifestation that touches the mind and creates a glow in the soul; the hearers cannot say, “Did not our heart burn within us, while he talked with us by the way, and while he opened to us the Scriptures?” An abundance of chaff is given to the people, but this will not awaken the transgressor or convict souls of sin. The souls who come to hear need a plain, straightforward presentation of truth. Those who have tasted of the word of God have dwelt long in an atmosphere where there is no God, and they long for the divine presence. TM 310.1
Gird up the loins of your mind, that you may present the truth of God acceptably. Preach the truth in its simplicity, but let your discourses be short. Dwell decidedly on a few important points. Realize every moment that you must have the presence of the Holy Spirit; for it can do a work that you cannot do of yourself. If you have any burden of a disagreeable character on your mind, get rid of it by personal labor or earnest prayer before you come before the people. Plead earnestly with God to remove that burden from your mind. Keep decidedly to a few points. Give the people pure wheat thoroughly winnowed from all chaff. Do not let your discourses embrace so much that weakness shall be seen in the place of solid argument. Present the truth as it is in Jesus, that those who hear may receive the very best impression. TM 310.2