The grace of God is always reformatory. Every human being is in a school, where he is to learn to give up hurtful practices, and to obtain a knowledge of what he can do for himself. Those who ignore these things, who take no precautions in regard to getting pure air to breathe and pure water to drink, cannot be free from disease. Their systems are defiled and the human structure injured. MM 226.2
Such people are careless, reckless, presumptuous, and self-destroying. Knowledge is strewn along their pathway, but they refuse to gather up the rays of light, saying that they depend on God. But will God do those things that He has left for them to do? Will He supply their neglect? Will He wink at their willing ignorance, and do great things for them, by restoring soul, body, and spirit, while they ignore the most simple agencies, the use of which would bring them their health? While day by day they indulge their appetite by eating that which brings disease, can they expect the Lord to work a miracle to restore them? This is not the Lord's way of working. By doing this, they make the Lord altogether such an one as themselves. Faith and works go together.... MM 226.3
Let all examine their own hearts, to see if they are not cherishing that which is a positive injury to them, and in the place of opening the door of the heart to let Jesus, the Sun of Righteousness in, are complaining of the dearth of the Spirit of God. Let these search for their idols, and cast them out. Let them cut away every unhealthful indulgence in eating or drinking. Let them bring their daily practice into harmony with nature's laws. By doing, as well as believing, an atmosphere will be created about the soul that will be a savor of life unto life.—Manuscript 86, 1897. MM 226.4