The Power of Faith

When he came to meet the people, a man approached him, fell to his knees at his feet and said to him, “Lord, have mercy on my son, who is insane and suffers much because he often falls into the fire and often into the water. I presented him to your disciples but they could not heal him.” Jesus answered, saying, “O disbelieving and perverse generation,  how long will I be with you? How  long must I endure you? Bring the child to me.” And when Jesus threatened the demon, it came out of the child, who was healed the same instant. Then the disciples came to Jesus in private and said to him, “Why could we not expel the demon?” Jesus answered,  “Because of your disbelief. For verily I say to you: if you had faith as a mustard seed, you would say to this mountain, ‘Move from here to there’ and it would move, and nothing would be impossible for you.” (Mt. 17:14-20)