In Genesis 41, God enabled Joseph to interpret Pharaoh’s dream where God warned that there would be 7 years of plenty and 7 years of famine.
God instructed Joseph to help the people prepare by saving 20% of their grains etc. during the 7 years of plenty, so they would have sufficient food during the 7 years of famine.
Some people call this “The Joseph Principle” which is a biblical principle that should be followed by everyone including individuals, corporations and governments.
In James 4:13-16, we are warned not to presume on the future, which most people have done by spending all of their income and not saving for future needs.
In reality, most people will experience a “famine” of some kind, such as a job loss, illness, etc. the results in the loss of income.

In summary, save money on a regular basis so that you have a cushion of cash [Proverbs 21:20] to fall back on for when you encounter difficult times.