Matthew 16:8
Which when Jesus perceived, he said unto them, O ye of little faith, why reason ye among yourselves, because ye have brought no bread?
Which when Jesus perceived,.... Without hearing any of their debates, but by his omniscience; for he knew the doubts and unbelief, and anxious solicitude of their minds, as well as their private reasonings one with another:
he said unto them, O ye of little faith; a phrase used upon a like occasion, when he would dissuade his disciples from an anxious distressing care about a livelihood, Matthew 6:30
See Gill "Matthew 6:30":
why reason ye among yourselves, because ye have brought no bread? blaming one another for your negligence and forgetfulness in this matter; distressing your minds, as if you should be famished and starved, because ye have not brought a quantity of bread, as you used to do with you.