They covered the face of all the land until it was black, and they consumed all the plants on the ground and all the fruit on the trees that the hail had left behind. Nothing green was left on any tree or plant in all the land of Egypt.
Here is, I. The invasion of the land by the locusts - God's great army, Joe 2:11. God bids Moses stretch out his hand (Exo 10:12), to beckon them, as it wee (for they came at a call), and he stretched forth his rod, Exo 10:13. Compare Exo 9:22 23.
Commenting on Exodus 10:12-20
For they covered the face of the whole earth,.... Of the whole land of Egypt; and this seems to be the instance in which these locusts differed from all others, that had been or would be, even in their numbers; for though there might have been before, and have been since, such vast numbers of them together as to darken the air and the sun...
There remained not any green thing - See Clarke's note on Exo 10:4.