Matthew 17:19 Then came the disciples to Jesus apart, and said, Why could not we cast him out? MC VC

Matthew 17:20 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, Remove hence to yonder place; and it shall remove; and nothing shall be impossible unto you. 16 I MC VC

Matthew 17:21 Howbeit this kind goeth not out but by prayer and fasting. MC VC

Mark 9:28 And when he was come into the house, his disciples asked him privately, Why could not we cast him out? 5 I MC VC

Mark 9:29 And he said unto them, This kind can come forth by nothing, but by prayer and fasting. 7 I MC VC