Jeremiah 46:23

They shall cut down her forest, saith the LORD, though it cannot be searched; because they are more than the grasshoppers, and are innumerable.

They shall cut down her forest - (, "He shall cut down the thickets of the forests with iron, and Lebanon shall fall by a mighty one").

Though it cannot be searched - they cut down her forest, dense and unsearchable (; ; ,) as it my seem: referring to the thickly-set cities of Egypt, which were at that time a thousand and twenty. The Hebrew particle is properly for, because.

Because - the reason why the Chaldeans shall be able to cut down so dense a forest of cities as Egypt: they themselves are countless in numbers.

They are more than the grasshoppers - locusts ().