Mark 4:40

And he said to them: Why are you so fearful? How is it that you have no faith?

Matthew 14:31

And Jesus immediately stretched out his hand, and took hold of him, and said to him: you of little faith, why did you doubt?

Luke 8:25

And he said to them: "Where is your faith? And being afraid, they wondered, and said one to another: "Who, then, is this, that he commands even the wind and the water, and they obey him?

Matthew 6:30

If then, God so clothes the herb of the field, which to-day is, and to-morrow is thrown into the oven, will he not much more clothe you, you of little faith?

Matthew 8:26

And he said to them: Why are you fearful, you of little faith? Then he arose, and rebuked the winds and the sea: and there was a great calm.

Matthew 16:8

And Jesus perceiving it, said to them: you of little faith! why are you reasoning among yourselves because you took no bread?

John 6:19-20

Then, having rowed about twenty-five or thirty furlongs, they saw Jesus walking on the sea, and coming near the ship; and they were afraid.

Treasury of Scripture Knowledge

Summary

And he said unto them, Why are ye so fearful? how is it that ye have no faith?

General references

Bible References

Why

Matthew 8:26
And he said to them: Why are you fearful, you of little faith? Then he arose, and rebuked the winds and the sea: and there was a great calm.
Matthew 14:31
And Jesus immediately stretched out his hand, and took hold of him, and said to him: you of little faith, why did you doubt?
Luke 8:25
And he said to them: "Where is your faith? And being afraid, they wondered, and said one to another: "Who, then, is this, that he commands even the wind and the water, and they obey him?
John 6:19
Then, having rowed about twenty-five or thirty furlongs, they saw Jesus walking on the sea, and coming near the ship; and they were afraid.

No faith

Matthew 6:30
If then, God so clothes the herb of the field, which to-day is, and to-morrow is thrown into the oven, will he not much more clothe you, you of little faith?
Matthew 16:8
And Jesus perceiving it, said to them: you of little faith! why are you reasoning among yourselves because you took no bread?

General references

Matthew 16:11
How is it that you do not understand, that I did not speak of bread when I commanded you to beware of the leaven of the Pharisees and of the Sadducees?