Psalms 145:15

The eyes of all wait upon thee - Margin, Look unto thee. All creatures, on the land, in the air, in the waters; all in heaven; all throughout the universe. That is, It is as if all directed their eyes to thee imploringly for the supply of their needs. To no one else can they look for those things which are needful for them. A universe thus looks every day, every hour, every moment, to its God! How sublime the scene!

And thou givest them their meat in due season - See the notes at Psalms 104:27, where the same words occur.