The Promise of a Lifetime - A Bible Study by Jack Kelley - https://gracethrufaith.com/topical-studies/spiritual-life/the-promise-of-a-lifetime/#more-32948
So do not worry, saying, 'What shall we eat?' or 'What shall we drink?' or 'What shall we wear?' For the pagans run after all these things, and your heavenly Father knows that you need them. But seek first his kingdom and his righteousness, and all these things will be given to you as well (Matt. 6:31-33).
When the Lord spoke these words the average person in his audience didn't know what the term discretionary income meant. They didn't have any extra resources nor were there any government programs to help them through rough times. If they were unable to provide for themselves they went without. And yet the Lord told them not to worry about it. He said if they sought the Father's Kingdom and His righteousness all their needs would be met.
It wasn't the first time God had made a promise like this. In Deut. 28 the Lord promised Israel that if they fully obeyed Him and carefully followed all His commands they would be blessed above all the nations on Earth.