Will a Man Rob God? – Malachi 3:6-12

The Prophet again proves the people guilty of perverseness: it was indeed hypocrisy, and though gross, it was yet surpassed by impudence; for they asked, whereby they had defrauded God? and yet this was evident even to children: for we know, and we have seen elsewhere, that avarice so ruled among them, that every one, bent on their own profit, neglected the temple and the priests. Since then they were openly sacrilegious, how shameless they must have been to ask whereby they had defrauded God! The thing itself was indeed manifest and commonly known, so that children could see it. God however deemed it enough to convict them by one sentence, — that they defrauded him in the tenths and in the first-fruits; not that any advantage accrued to him from oblations, as he had no need of any such things; but he rightly calls and counts that his own which he had appointed for his own service. – John Calvin