Luke 12:26

If, therefore, ye cannot do the least thing, why are ye anxious about the rest?

Luke 12:29

And seek ye not what ye shall eat, and what ye shall drink; nor be troubled with anxiety;

1 Peter 5:7

having cast all your anxiety on Him, because 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
And seek ye not what ye shall eat, and what ye shall drink; nor be troubled with anxiety;
1 Peter 5:7
having cast all your anxiety on Him, because He careth for you.