Can you imagine going on a mission and not knowing when you would return to your family? How would you feel? What would you do to prepare?
The four sons of King Mosiah—Ammon, Aaron, Omner, and Himni—and their friend Alma went on a mission that lasted 14 years. Each of the sons of Mosiah could have been the king of their own country, but instead they followed their hearts. They and Alma had become converted to the gospel of Jesus Christ, and they wanted to share the gospel with the Lamanites, their enemies.
The young men knew they could not accomplish their mission without power from God. Alma 17:2–3 tells how they got this power: “They had searched the scriptures diligently, that they might know the word of God. … They had given themselves to much prayer, and fasting; therefore they had the spirit of prophecy, and the spirit of revelation, and when they taught, they taught with power and authority of God.”
Fasting and praying helped these young men receive blessings from God. Just like Alma and the sons of Mosiah, you can fast and pray to prepare to receive the blessings Heavenly Father has for you.