New Revised Standard Version
He said to them, “Because of your little faith. For truly I tell you, if you have faith the size of a mustard seed, you will say to this mountain, ‘Move from here to there,’ and it will move; and nothing will be impossible for you.”

New American Bible
He said to them, “Because of your little faith. Amen, I say to you, if you have faith the size of a mustard seed, you will say to this mountain, ‘Move from here to there,’ and it will move. Nothing will be impossible for you.” [

Douay-Rheims Bible
But this kind is not cast out but by prayer and fasting.

But this kind is not cast out but by prayer and fasting.

Because.

Matthew 17:17 And Jesus rebuked him, and the devil went out of him, and the child was cured from that hour.

Matthew 14:30,31 But seeing the wind strong, he was afraid: and when he began to sink, he cried out, saying: Lord, save me. . . .

Hebrews 3:19 And we see that they could not enter in, because of unbelief.

If.

Matthew 21:21 And Jesus answering, said to them: Amen, I say to you, if you shall have faith and stagger not, not only this of the fig tree shall you do, but also if you shall say to this mountain, Take up and cast thyself into the sea, it shall be done.

Mark 11:23 Amen I say to you that whosoever shall say to this mountain, Be thou removed and be cast into the sea, and shall not stagger in his heart, but be believe that whatsoever he saith shall be done; it shall be done unto him.

Luke 17:6 And the Lord said: If you had faith like to a grain of mustard seed, you might say to this mulberry tree: Be thou rooted up and be thou transplanted into the sea. And it would obey you.

1 Corinthians 12:9 To another, faith in the same spirit: to another, the grace of healing in one Spirit:

1 Corinthians 13:2 And if I should have prophecy and should know all mysteries and all knowledge, and if I should have all faith, so that I could remove mountains, and have not charity, I am nothing.

faith.

a grain.

Matthew 13:31 Another parable he proposed unto them, saying: The kingdom of heaven is like to a grain of mustard seed, which a man took and sowed in his field.

Mark 4:31 It is as a grain of mustard seed: which when it is sown in the earth, is less than all the seeds that are in the earth:

nothing.

Mark 9:23 And Jesus saith to him: If thou canst believe, all things are possible to him that believeth.

Luke 1:37 Because no word shall be impossible with God.

Luke 18:27 He said to them: The things that are impossible with men are possible with God.