"Since a healthy state of mind depends upon the normal condition of the vital forces, what care should be exercised that neither stimulants nor narcotics be used! Yet we see that a large number of those who profess to be Christians are using tobacco. They deplore the evils of intemperance; yet while speaking against the use of liquors, these very men will eject the juice of tobacco. There must be a change of sentiment with reference to tobacco-using before the root of the evil will be reached. We press the subject still closer. Tea and coffee are fostering the appetite for stronger stimulants. And then we come still closer home, to the preparation of food, and ask, Is temperance practiced in all things? are the reforms which are essential to health and happiness carried out here? CE 181.1"
"All things are lawful unto me, but all things are not expedient: all things are lawful for me, but I will not be brought under the power of any."
Both passages emphasize the importance of not being controlled by harmful substances or habits. EGW applies the principle of not being 'brought under the power of any' to stimulants and narcotics.
"Every true Christian will have control of his appetites and passions. Unless he is free from the bondage of appetite, he cannot be a true, obedient servant of Christ. The indulgence of appetite and passion blunts the effect of truth upon the heart. It is impossible for the spirit and power of the truth to sanctify a man, soul, body, and spirit, when he is controlled by sensual desires.— Christian Temperance and Bible Hygiene, 75-80 . CE 181.2"
"But I keep under my body, and bring it into subjection: lest that by any means, when I have preached to others, I myself should be a castaway."
Both passages discuss the importance of self-control and subduing the body's desires. Paul's statement about keeping his body 'under' aligns with EGW's emphasis on controlling appetites and passions.
"Let not sin therefore reign in your mortal body, that ye should obey it in the lusts thereof."
Both passages warn against allowing the body's desires (lusts/appetites and passions) to control one's actions. EGW's statement directly echoes the sentiment of Romans 6:12.