“True faith is focused in and on the Lord Jesus Christ and always leads to righteous action. The Prophet Joseph Smith taught that “faith [is] the first principle in revealed religion, and the foundation of all righteousness” and that it is also “the principle of action in all intelligent beings” (Lectures on Faith [1985], 1). Action alone is not faith in the Savior, but acting in accordance with correct principles is a central component of faith. Thus, “faith without works is dead” (James 2:20). The Prophet Joseph further explained that “faith is not only the principle of action, but of power also, in all intelligent beings, whether in heaven or on earth” (Lectures on Faith, 3). Thus, faith in Christ leads to righteous action, which increases our spiritual capacity and power. Understanding that faith is a principle of action and of power inspires us to exercise our moral agency in compliance with gospel truth, invites the redeeming and strengthening powers of the Savior’s Atonement into our lives, and enlarges the power within us whereby we are agents unto ourselves (see D&C 58:28).”

Source: Ask In Faith, April 2008 General Conference