Matthew 17:19-21

ISV^{(i) 19} Then the disciples came to Jesus privately and asked, “Why couldn’t we drive it out?”
²⁰ He told them, “Because of your lack of faith. I tell all of you with certainty, if you have faith like a grain of mustard seed, you can say to this mountain, ‘Move from here to there,’ and it will move, and nothing will be impossible for you. ²¹ But this kind does not come out except by prayer and fasting.”