Matthew 17:20

17 And Jesus, answering, said, O false and foolish generation, how long will I be with you? how long will I put up with you? let him come here to me.

18 And Jesus gave orders to the unclean spirit, and it went out of him: and the boy was made well from that hour.

19 Then the disciples came to Jesus privately, and said, Why were we not able to send it out?

20 And he says to them, Because of your little faith: for truly I say to you, If you have faith as a grain of mustard seed, you will say to this mountain, Be moved from this place to that; and it will be moved; and nothing will be impossible to you.

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22 And while they were going about in Galilee, Jesus said to them, The Son of man will be given up into the hands of men;

23 And they will put him to death, and the third day he will come again from the dead. And they were very sad.