Mat 6:31 Therefore take no thought, saying, What shall we eat? or, What shall we drink? or, Wherewithal shall we be clothed?
Mat 6:32 (For after all these things do the Gentiles seek:) for your heavenly Father knoweth that ye have need of all these things.
Mat 6:33 But seek ye first the kingdom of God, and his righteousness; and all these things shall be added unto you.
This promise is to all of God's children for all time and eternity. It will never change, as long as we will continue seeking His kingdom and His righteousness, He will always provide for our needs. We don't need to be afraid of a shortage. Consider the way He led the Children of Israel in the wilderness; they went from steak and salad in Egypt to the Sinai wilderness , where there was no food and many times no water, to prove His people.
However, He took care of all their needs.
He gave them manna from heaven, angel's bread. He brought cool clear water from a rock. He brought in quail when they wanted meat. Their shoes never wore out. Their clothes never wore out. They had all they needed but some murmured and complained and God was not pleased with them.
So they went through great trials in the wilderness but God brought them into their land in due time and gave them great abundance of all things.
So when we are going through these trials as we are now we need to have patience and self control and trust our God completely and be willing to eat manna for a while without complaining, if that be His will, because if we will remain faithful to Him, even unto death, Jesus has promised He has prepared a place for us, and the glory is great. The things that God has prepared for those that love Him have not even entered into the heart of man.