Jesus told the man, in Mark, chapter 9, that his son was possessed by demons and the demons were throwing him into fire and then drowning him. Jesus told the man, “All things are possible for those who believe.” And the man said, I do believe, help me with my unbelief.
I think that story shows us how Christ asks us to take a leap of faith. It's a leap of faith in believing in him as a person. We are giving him an opportunity to subjectively bless our lives with miracles and with peace and power. We are opening ourselves up to to love and forgiveness and getting over our past and probably 10 other things!