What Did Jesus Mean in Matthew 6:34?

The surrounding context is Jesus explaining that our Heavenly Father knows all of our needs and will provide for them. Jesus exhorts his followers to avoid anxiety about worldly things.

This saying in Matthew 6:34 is essentially reminding us that today has enough problems of its own to deal with and not to worry about tomorrow’s. A contemporary equivalent might be: “We’ll cross that bridge when we come to it.”