John Gill Commentary Ezekiel 32:5

"And I will lay thy flesh upon the mountains, and fill the valleys with thy height." — Ezekiel 32:5 (ASV)

And I will lay your flesh upon the mountains

The remainder of it, left by the birds and beasts of prey, and who might carry it thither; or it intends such of the Egyptians who should flee to the mountains for safety, but should fall by the hands of the enemy there.

So the Targum, "and I will give the flesh of your slain upon the mountains."

And fill the valleys with your height

his huge army, and with which he prided and lifted up himself, and thought himself safe in; which should fall in such great numbers as to cover the plains and valleys where the battle was fought.

Jarchi observes, that the word for "height" has with some the signification of "worms"; and so the Syriac version renders it, "and the valleys shall be filled with your worms"; bred in the carcasses of the slain: and so the Vulgate Latin version, "with corrupt matter"; such as issues out of putrefied wounds. The Targum very rightly paraphrases it, "the valleys shall be filled with the carcasses of your army."