Joel 2:2-3

2That day will be sad and dark. There will be dark clouds. A great big army is coming. It comes across the sky like light in the morning. A great army like this has never come before. And it will never come again in future years.

3Fire goes in front of the army. It burns everything behind them. The land in front of them is like the Garden of Eden. Behind them it is like a desert. They leave nothing behind them.