Malachi 3:5

2 But who can abide the day of his coming? and who shall stand when he appears? for he is like a refiner`s fire, and like fuller`s soap:

3 and he will sit as a refiner and purifier of silver, and he will purify the sons of Levi, and refine them as gold and silver; and they shall offer to Yahweh offerings in righteousness.

4 Then shall the offering of Judah and Jerusalem be pleasant to Yahweh, as in the days of old, and as in ancient years.

5 I will come near to you to judgment; and I will be a swift witness against the sorcerers, and against the adulterers, and against the perjurers, and against those who oppress the hireling in his wages, the widow, and the fatherless, and who turn aside the sojourner [from his right], and don`t fear me, says Yahweh of Hosts.

6 For I, Yahweh, don`t change; therefore you, sons of Jacob, are not consumed.

7 From the days of your fathers you have turned aside from my ordinances, and have not kept them. Return to me, and I will return to you, says Yahweh of Hosts. But you say, Wherein shall we return?

8 Will a man rob God? yet you rob me. But you say, Wherein have we robbed you? In tithes and offerings.