1“For behold, the day comes, burning like a furnace, when all the proud and all who work wickedness will be stubble. The day that comes will burn them up,” says Yahweh of Armies, “so that it will leave them neither root nor branch. 2But to you who fear my name shall the sun of righteousness arise with healing in its wings. You will go out and leap like calves of the stall. 3You shall tread down the wicked; for they will be ashes under the soles of your feet in the day that I make,” says Yahweh of Armies.
4“Remember the law of Moses my servant, which I commanded to him in Horeb for all Israel, even statutes and ordinances.
5Behold, I will send you Elijah the prophet before the great and terrible day of Yahweh comes. 6He will turn the hearts of the fathers to the children and the hearts of the children to their fathers, lest I come and strike the earth with a curse.”
The day of Yahweh is mentioned several times in Scripture and probably should not be viewed as one specific calendar day in human history but whenever God decides to bring judgment on sinful humans who oppose Him. On the other hand, there are times of Yahweh's deliverance of those who love Him (Isa 13:6, 9; Ezek 13:5; 30:3; Joel 1:15; 2:1, 11, 31; 3:14; Amos 5:18, 20; Obad 15; Zeph 1:7, 14; Mal 4:5).