The father of a boy who was often thrown into fire or water by an evil spirit desperately cries out to Jesus for help, saying "I believe; help my unbelief!". Jesus replies that all things are possible for those who believe. The father recognizes his struggle with doubt and pleads with Jesus to help overcome his weakness of faith. The lesson is to honestly acknowledge one's doubts, start from where you are, and lean on God's grace as you resolve to trust in Jesus despite challenges to one's faith or desire to control outcomes.