Fasting is a practice joined with prayer among the children of God. They were commanded to gather together often and “join in fasting and mighty prayer” for “the welfare of the souls of those who knew not God” (Alma 6:6).
Some had “given themselves to much prayer, and fasting”; when they taught, they taught “with power and authority of God” (Alma 17:3). Others continued “in fasting and prayer” and met together often to pray and hear the word of the Lord (4 Nephi 1:12).