14 And when they came unto the multitude, there came to him a man, kneeling down to him, 15 and saying, `Sir, deal kindly with my son, for he is lunatic, and doth suffer miserably, for often he doth fall into the fire, and often into the water, 16 and I brought him near to thy disciples, and they were not able to heal him.' 17 And Jesus answering said, `O generation, unstedfast and perverse, till when shall I be with you? till when shall I bear you? bring him to me hither;' 18 and Jesus rebuked him, and the demon went out of him, and the lad was healed from that hour. 19 Then the disciples having come to Jesus by himself, said, `Wherefore were we not able to cast him out?' 20 And Jesus said to them, `Through your want of faith; for verily I say to you, if ye may have faith as a grain of mustard, ye shall say to this mount, Remove hence to yonder place, and it shall remove, and nothing shall be impossible to you,