The book of Malachi is not only one of the last (if not the last) books of the Old Testament written, but it is also the last book most of see in our Old Testaments.1This is true for both Protestant and Catholic Bibles, as typically arranged. Therefore, it is all the more appropriate that the final chapter speaks of the final end of history. As far as the fate of the finally unrepentant goes, Malachi’s God-breathed prediction leaves little to the imagination.
For behold, the day is coming, burning like a furnace; and all the arrogant and every evildoer will be chaff; and the day that is coming will set them ablaze,” says the LORD of hosts, “so that it will leave them neither root nor branch. But for you who fear My name, the sun of righteousness will rise with healing in its wings; and you will go forth and skip about like calves from the stall. You will tread down the wicked, for they will be ashes under the soles of your feet on the day (Malachi 4.1-3, NASB).
You can see why annihilationists might point to this passage. God will destroy the wicked. He will set them on fire like chaff, and no remnant of them will remain. Then He says that they will be like ashes under the feet of the wicked. Whether plain and literal or highly symbolic, how much clearer could the picture of final destruction (i.e. annihilation) possibly be?2Portions of this article are adapted from The Bible Teaches Annihilationism by Joseph Dear, Section XXXIX.