"You can be sure the day of the LORD is coming. My anger will burn like a furnace. All those who are proud will be like straw. So will all those who do what is evil. The day that is coming will set them on fire," says the LORD who rules over all. "Not even a root or a branch will be left to them.
References for Malachi 4:1
"But here is what will happen for you who have respect for me. The sun that brings life will rise. Its rays will bring healing to my people. You will go out and leap like calves that have just been let out of the barn.
"Then you will stomp on sinful people. They will be like ashes under your feet. That will happen on the day I act," says the Lord.
"Remember the law my servant Moses gave you. Remember the rules and laws I gave him at Mount Horeb. They were for the whole nation of Israel.
"I will send you the prophet Elijah. He will come before the day of the LORD arrives. It will be a great and terrifying day.
Elijah will teach parents how to love their children. He will also teach children how to honor their parents. If that does not happen, I will come. And I will put a curse on the land."