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;
Now the ephah was a bushel basket, but they started making the basket smaller. Still charging you for a bushel, but you weren't getting a full measure. So they were taking and keep cutting down on the size of the bushel basket.