Jamieson, Fausset & Brown

So greedy are they of unjust gain that they cannot spare a single day, however sacred, from pursuing it. They are strangers to God and enemies to themselves, who love market days better than sabbath days; and they who have lost piety will not long keep honesty. The new-2moons (Num 10:10) and sabbaths were to be kept without working or trading (Neh 10:31). set forth wheat--literally, "open out" stores of wheat for sale. ephah--containing three seahs, or above three pecks. making . . . small--making it below the just weight to purchasers. shekel great--taking from purchasers a greater weight of money than was due. Shekels used to be weighed out in payments (Gen 23:16). Thus they committed a double fraud against the law (Deu 25:13-14).