Charles H. Spurgeon on Psalms 104:28

That thou givest them they gather. God gives it, but they must gather it, and they are glad that he does so, for otherwise their gathering would be in vain. We often forget that animals and birds in their free life have to work to obtain food even as we do; and yet it is true with them as with us that our heavenly Father feeds all. When we see the chickens picking up the corn which the housewife scatters from her lap we have an apt illustration of the manner in which the Lord supplies the needs of all living things —he gives and they gather. Thou openest thine hand, they are filled with good. Here is divine liberality with its open hand filling needy creatures till they want no more: and here is divine omnipotence feeding a world by simply opening its hand. What should we do if that hand were closed? There would be no need to strike a blow, the mere closing of it would produce death by famine. Let us praise the open handed Lord, whose providence and grace satisfy our mouths with good things.