Matthew 17:19-21 Then coming up to Jesus privately, the disciples said, Why were we not able to cast him out?

LITV⁽ⁱ⁾ ¹⁹ Then coming up to Jesus privately, the disciples said, Why were we not able to cast him out? ²⁰ And Jesus said to them, Because of your unbelief. For truly I say to you, If you have faith as a grain of mustard, you will say to this mountain, Move from here to there! And it will move. And nothing shall be impossible to you. ²¹ But this kind does not go out except by prayer and fasting.