'Grain' in the Bible

You'll go to your grave at a ripe old age; like a stack of grain that's harvested at just the right time.

They wander around naked, without clothes; hungry, though they carry sheaves of grain.

Will you trust him that he'll bring in your grain, and gather it to your threshing floor?"

"Beneath him he is armored as with sharp potsherds; he tears through muddy ground like a threshing sledge through grain.