'Wheat' in the Bible

Forasmuch therefore as you trample on the poor, and take taxes from him of wheat: You have built houses of cut stone, but you will not dwell in them. You have planted pleasant vineyards, but you shall not drink their wine.

Saying, 'When will the new moon be gone, that we may sell grain? And the Sabbath, that we may market wheat, making the ephah small, and the shekel large, and dealing falsely with balances of deceit;

that we may buy the poor for silver, and the needy for a pair of shoes, and sell the sweepings with the wheat?'"