Amos 8:5-6
Saying, When will the new moon be gone, that we may sell corn? and the sabbath, that we may set forth wheat, making the ephah small, and the shekel great, and falsifying the balances by deceit? That we may buy the poor for silver, and the needy for a pair of shoes; yea, and sell the refuse of the wheat?
Leviticus 19:35-36
Ye shall do no unrighteousness in judgment, in meteyard, in weight, or in measure. Just balances, just weights, a just ephah, and a just hin, shall ye have: I am the LORD your God, which brought you out of the land of Egypt.
Amos 8 exposes a comprehensive pattern of statutory commercial fraud: small ephah (defrauding on quantity), great shekel (overcharging on payment weight), and falsified balances — the precise instruments the Leviticus 19 just-weights statute required to be exact. The merchants' impatience with the Sabbath and new moon compounds the violation: they observe the statutory holy days only as interruptions to their fraudulent commerce, violating both the Exodus 20 Sabbath statute and the Leviticus 19 commercial integrity ordinance simultaneously.