Luke 12:26

if then you can't effect so small a matter, why are you disquieted about a much longer time?

Luke 12:29

therefore don't be concern'd about what ye shall eat, or what ye shall drink; but lay aside all your anxiety:

1 Peter 5:7

refer all your disquietudes to him, for you are the objects of his care.

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
therefore don't be concern'd about what ye shall eat, or what ye shall drink; but lay aside all your anxiety:
1 Peter 5:7
refer all your disquietudes to him, for you are the objects of his care.