Much prayer and fasting

1. Alma 17: 3, 9
     3 But this is not all; 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.
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     9 And it came to pass that they journeyed many days in the wilderness, and they fasted much and prayed much that the Lord would grant unto them a portion of his Spirit to go with them, and abide with them, that they might be an instrument in the hands of God to bring, if it were possible, their brethren, the Lamanites, to the knowledge of the truth, to the knowledge of the baseness of the traditions of their fathers, which were not correct.
2. Alma 28: 6
     6 And now surely this was a sorrowful day; yea, a time of solemnity, and a time of much fasting and prayer.
3. Alma 45: 1
     1 Behold, now it came to pass that the people of Nephi were exceedingly rejoiced, because the Lord had again delivered them out of the hands of their enemies; therefore they gave thanks unto the Lord their God; yea, and they did fast much and pray much, and they did worship God with exceedingly great joy.