'Grain' in the Bible

All the best of the fresh [olive] oil, and all the best of the new wine and of the grain, the first fruits of those which they give to the Lord, I give them to you.

Your offering shall be credited to you as the grain from the threshing floor or as the full produce from the wine vat.

Why have you made us come up from Egypt, to bring us to this wretched place? It is not a place of grain or of figs or of vines or of pomegranates, and there is no water to drink.”

‘Also on the day of the first fruits, when you offer a new grain offering to the Lord at your Feast of Weeks, you shall have a holy [summoned] assembly; you shall do no laborious work.