Then the disciples having come to Jesus by himself, said, `Wherefore were we not able to cast him out?'
and Jesus rebuked him, and the demon went out of him, and the lad was healed from that hour.
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,
And when he was alone, those about him, with the twelve, did ask him of the simile,
And he having come into the house, his disciples were questioning him by himself -- `Why were we not able to cast it forth?'