Joel 2:2-3

2a day of darkness and gloom, a day of clouds and total darkness, like the dawn spreading over the mountains; a great and strong people appears, such as never existed in ages past and never will again in all the generations to come.

3A fire devours in front of them, and behind them a flame blazes. The land in front of them is like the garden of Eden, but behind them, it is like a desert wasteland; there is no escape from them.