Malachi ends the way it began, with God speaking and his people arguing back. This is the last of the book’s disputations, and it sounds almost exactly like the complaint of Malachi 2:17: the wicked seem to do well, so where is the God of justice? But there is a sharper edge here. The remnant is no longer simply puzzled by God’s ways. They have concluded that serving him is vain, empty, a bad investment. They kept the rules, they went through the motions of worship, they even walked around in mourning before the Lord. Now they want to know where their return is.
The word translated “profit” carries the weight of the whole complaint. Throughout the Old Testament it describes gain or personal advantage, and it is often tied to greed. Judah uses it standing over the pit where his brother Joseph lies: “What profit is it if we kill our brother and conceal his blood?” (Genesis 37:26). Solomon uses it for the way of those who are greedy for unjust gain (Proverbs 1:19). The remnant had turned their relationship with God into a transaction. Obedience was a deposit, and they were demanding a withdrawal.
Notice the irony. They despised the arrogant and the evildoers who seemed to prosper, yet in demanding their cut from God they had become arrogant themselves. Their words were “hard against” the Lord. Grumbling is never as harmless as it feels. It is a verdict on God’s goodness, spoken out loud. And it usually grows in the soil of impatience, where the promise God has just made (Malachi 3:10-12) is not good enough because it is not immediate.
We live in a culture that expects dinner in ninety seconds and grows irritated when the microwave takes two minutes. It is not a long step from there to treating God as if he exists on our timeline. But the Lord of hosts is not a vending machine, and he does not owe us a cut. He owes us nothing, and in Christ he has given us everything.