Obedience is the basic law of heaven, and obedience to specific laws will result in specific blessings, culminating in the greatest blessing, as Elder Marion G. Romney explained: “The perfection upon which exaltation hangs, I repeat, is an individual matter. It is conditioned upon the observance of celestial laws as they apply to earth life. The Word of Wisdom is one of them, so also are chastity, tithing, observance of the Sabbath day, prayer, honesty, industry, love of God and fellow men, patience, kindness, charity, and all the rest of the principles and ordinances of the gospel of Jesus Christ. Each individual who observes one or more of these laws shall receive the blessings predicated thereon, and each Church member who will, with all the energy of his soul, diligently strive to live them all, shall receive the blessings predicated upon such striving. Eternal life, the greatest gift of God, is that blessing, and it will follow the living of the gospel as the night the day, regardless of statistics or averages, or of what others think or say or do.” (In Conference Report, Oct. 1956, pp. 15–16; see also Enrichment G in the Appendix.)
“Section 130, Items of Instruction,” Doctrine and Covenants Student Manual (2002), 321–24