'Massing' in the Bible

"Listen! There's a noise on the mountains like that of a great multitude! Listen! There's an uproar among the kingdoms, like that of nations massing together! The LORD of the Heavenly Armies is mustering an army for battle.

The many nations massing together are as good as dead, those who make a commotion as loud as the roaring of the sea's waves. The people making such an uproar are as good as dead, those who make an uproar as loud as the roaring of powerful waves.

And the goods taken in war will be got together like the massing of young locusts; men will be rushing on them like the rushing of locusts.