'Little Faith' in the Bible

And if this is how God clothes the wild grass, which is here today and tomorrow is tossed into the fire to heat the oven, won't he clothe you even more, you people of little faith?

But he said to them, "Why are you cowardly, you people of little faith?" Then he got up and rebuked the winds and the sea, and it was dead calm.

Immediately Jesus reached out his hand and caught him, saying to him, "You of little faith, why did you doubt?"

When Jesus learned of this, he said, "You who have such little faith! Why are you arguing among yourselves about having no bread?

He told them, "It was because of your little faith. I tell you the truth, 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."