What is the meaning of Joel 2:20?

* The two F.O.G. Bibles & Commentary below are currently a work in progress.

The northern army I will drive away from you, banishing it to a barren and desolate land, its front ranks into the Eastern Sea, and its rear guard into the Western Sea. And its stench will rise; its foul odor will ascend. For He has done great things.

Berean Standard Bible (BSB)

But I will remove the northern army far away from you, and will drive it into a barren and desolate land, its front into the eastern sea, and its back into the western sea; and its stench will come up, and its bad smell will rise.” Surely he has done great things.

World English Bible (WEB)

But I will remove far off{H7368}{(H8686)} from you the northern{H6830} army, and will drive{H5080}{(H8689)} him into a land{H776} barren{H6723} and desolate{H8077}, with his face{H6440} toward the east{H6931} sea{H3220}, and his hinder part{H5490} toward the utmost{H314} sea{H3220}, and his stink{H889} shall come up{H5927}{(H8804)}, and his ill savour{H6709} shall come up{H5927}{(H8799)}, because he hath done{H6213}{(H8800)} great things{H1431}{(H8689)}.

Strong's King James

But I will remove the northerner from you, I will drive it into a dry wasteland, Its front into the eastern sea, its rear end into the western sea, Its stench will rise, its rotten smell will rise up, For it has done great things.

The F.O.G*

The F.O.G Paraphrase

And the northern I put far off from you, And have driven him unto a land dry and desolate, With his face unto the eastern sea, And his rear unto the western sea, And come up hath his stink, And come up doth his stench, For he hath exerted himself to work.

Young's Literal Translation