Some of our preachers are killing themselves by long, tedious praying and loud speaking, when a lower tone would make a better impression and save their own strength. Now, while you go on regardless of the laws of life and health, and follow the impulse of the moment, do not charge it upon God if you break down. Many of you waste time and strength in long preliminaries and excuses as you commence to speak. Instead of apologizing because you are about to address the people, you should commence your labor as though God had something for you to say to them. Some use up nearly half an hour in making apologies; thus the time is frittered away, and when they get to their subject, where they are desirous to fasten the points of truth, the people are wearied out and cannot see their force or be impressed with them. You should make the essential points of present truth as distinct as mileposts so that the people will understand them. They will then see the arguments you want to present and the …
"What? know ye not that your body is the temple of the Holy Ghost which is in you, which ye have of God, and ye are not your own? For ye are bought with a price: therefore glorify God in your body, and in your spirit, which are God’s."
Both passages address the importance of taking care of one's body. 1 Corinthians 6:19-20 states that the body is a temple and should be used to glorify God, while EGW discusses preachers harming themselves and blaming God.