Luke 12:26

If therefore ye are unable to do the least thing, why are ye anxious about the others?

Luke 12:29

So then be not ye inquisitive what ye shall eat, or what ye shall drink, nor be agitated with restless anxiety.

1 Peter 5:7

casting all your anxiety upon him; for he careth for you.

Treasury of Scripture Knowledge

Summary

If ye then be not able to do that thing which is least, why take ye thought for the rest?

Bible References

Why

Luke 12:29
So then be not ye inquisitive what ye shall eat, or what ye shall drink, nor be agitated with restless anxiety.
1 Peter 5:7
casting all your anxiety upon him; for he careth for you.