Matthew 17:7, 20-21

But ­Jes­us came and touched them and said, “Rise, and do not be afraid.”

Jesus said to them, “Because of your unbelief. For truly I say to you, if you have faith as a grain of mustard seed, you will say to this mountain, ‘Move from here to there,’ and it will move. And nothing will be impossible for you. But this kind does not go out except by prayer and fasting.”