True to the Faith:
This account of Jesus casting out an evil spirit from a
man’s son teaches that prayer and fasting can give added strength to those
giving and receiving priesthood blessings. The account can also be applied to
your personal efforts to live the gospel. If you have a weakness or sin that
you have struggled to overcome, you may need to fast and pray in order to
receive the help or forgiveness you desire. Like the demon that Christ cast
out, your difficulty may be the kind that will go out only through prayer and
fasting” (True to the Faith: A Gospel Reference 2004, 67).