The Word of Wisdom
President Spencer W. Kimball

The Word of Wisdom is a commandment. In 1851 President Brigham Young gave to this Church the Word of Wisdom as a final and definite commandment. From the time it was given to the Prophet Joseph until 1851 it was considered as a matter of preference or suggestions to the people, a word of advice and counsel. From 1851 until this day it is a commandment to all the members of the Church of Jesus Christ.

(President Spencer W. Kimball, Teachings of Spencer W. Kimball, p. 201)

Section 89

Doctrine & Covenants