John Calvin on Jeremiah 46:8

Then he adds, Egypt is like rivers and like a lake: it made a noise with its forces, as though a river were rolling along its waters. But all this would be nothing, as he afterwards tells us he adds, he hath said, I will ascend, I will cover the land, I will destroy the city, etc. He puts city in the singular instead of the plural number; The city here is put in opposition to the land, — And it (Egypt) said, I will ascend, I will cover the land; I will destroy (every) city, and the dwellers in it.

I will destroy cities, he says, and all who dwell in them. He in short sets forth Pharaoh here as one who triumphed before he fought, because he could cover the land with the multitude of his footmen and horsemen. It now follows, —

Jeremiah 46:9

9. Come up, ye horses; and rage, ye chariots; and let the mighty men come forth; the Ethiopians and the Libyans, that handle the shield; and the Lydians, that handle and bend the bow.

9. Ascendite equi (quidam vertunt, insanite, sed dura esset metaphora, ideo simpliciter accipio,) jactate vos currus (ponit in singulari numero, cum tamen verbum sit pluralis numeri,) egredientur fortes, nempe Aethiopes et Lybes, qui tenent clypeum, et Lydi, qui tenent et tendunt arcum.