'Little Faith' in the Bible

And if God so clothes the grass of the field, which today is, and tomorrow is cast into an oven, will he not much more you, O ye of little faith?

And he says to them, Why are ye cowardly, O ye of little faith? Then after rising, he rebuked the winds and the sea, and there became a great calm.

And straightaway having stretched forth his hand, Jesus took hold of him, and says to him, O thou of little faith, why did thou doubt?

And having known it, Jesus said to them, O ye of little faith, why do ye deliberate among yourselves because ye brought no loaves?