Matthew 17:20
He told them: It was because of your lack of faith: Truly I say to you, if you have faith as small as a grain of mustard seed, you will say to this mountain, move and it will move. Nothing will be impossible to you.
Luke 17:6
He answered: If your faith was as big as a mustard seed; you could say to this mulberry tree, uproot yourself and plant yourself in the sea and it would obey you!
Matthew 13:31
In another illustration Jesus said: The kingdom of heaven is like a grain of mustard seed, which a man sowed in his field.
Matthew 21:21
Jesus answered: If you have faith and do not doubt, I make this promise to you: You will be able to do what was done to this fig tree. When you say to this mountain, be moved into the sea, it will be done.
Mark 11:23
Truly I say faithful ones shall say to this mountain, be cast into the sea and it will happen. There must be no doubt in his heart and he must believe that what he says will come to pass.
1 Corinthians 13:2
If I have the gift of prophesy, and know all secrets and all knowledge, and though I have all faith so as to remove mountains, but do not have love, I am nothing.
Mark 9:23
Jesus said to him: All things are possible to him who has faith.
Matthew 14:30-31
When he noticed how strong the wind was, he became afraid. He began to sink, and cried: Help me Lord!
Matthew 17:9
When they came down from the mountain, Jesus commanded them not to tell anyone what they saw, until the Son of man has risen from the dead.
Matthew 17:17
Jesus answered: You unbelieving and perverted generation, how long will I be with you? How long must I put up with you? Bring him to me.
Mark 4:31
It is like a grain of mustard seed. When it is planted in the earth it is smaller than all the seeds on the earth.
Luke 1:37
When God speaks, these things are possible.
Luke 18:27
He replied: The things that are impossible with men are possible with God.
John 11:40
Jesus said to her: Did I not say that if you believe you shall see the glory of God?
1 Corinthians 12:9
To another faith by the same Spirit; to another the gifts of healing by the one Spirit;
Hebrews 3:19
We see that they could not enter in on account of a lack of faith (unbelief) (disobedience).