The Power of Faith

And when they were come to the multitude, there came to Him a certain man kneeling down to Him and saying, Lord, have mercy on my son, for he is epileptic and greatly vexed, for often he falleth into the fire and often into the water. And I brought him to Thy disciples and they couldn't cure him. Then Jesus answered and said, O faithless and perverse generation, how long shall I be with you? How long shall I bear with you? Bring him here to Me. And Jesus rebuked the demon and he departed out of him and the child was cured from that very hour. Then came the disciples to Jesus privately and said, Why could not we cast him
out? And Jesus said unto them, Because of your unbelief, for verily I say unto you if ye have faith as a grain of mustard seed, ye shall say unto this mountain, Move from here to yonder place, and it shall move and nothing shall be impossible unto you