Then [Jesus] said to them all: “Whoever wants to be my disciple must deny themselves and take up their cross daily and follow me.”
Luke 9:23 NIV
I have been crucified with Christ and I no longer live, but Christ lives in me. The life I now live in the body, I live by faith in the Son of God, who loved me and gave himself for me. Galatians 2:20 NIV
The next day, when they came down from the mountain, a large crowd met him. A man in the crowd called out, “Teacher, I beg you to look at my son, for he is my only child. A spirit seizes him and he suddenly screams; it throws him into convulsions so that he foams at the mouth. It scarcely ever leaves him and is destroying him. I begged your disciples to drive it out, but they could not.” “You unbelieving and perverse generation,” Jesus replied, “how long shall I stay with you and put up with you? Bring your son here.” Even while the boy was coming, the demon threw him to the ground in a convulsion. But Jesus rebuked the evil spirit, healed the boy and gave him back to his father. And they were all amazed at the greatness of God. Luke 9:37-43 NIV
Jesus asked the boy’s father, “How long has he been like this?” “From childhood,” he answered. “…But if you can do anything, take pity on us and help us.” “‘If you can’?” said Jesus. “Everything is possible for one who believes.” Immediately the boy’s father exclaimed, “I do believe; help me overcome my unbelief!” Mark 9:21-24 NIV
1) Faith is received, not achieved.
2) Faith must have an object.
After Jesus had gone indoors, his disciples asked him privately, “Why couldn’t we drive out [the evil spirit]?” He replied, “This kind can come out only by prayer.” Mark 9:28-29 NIV