Isaiah 13:4
"The noise of a multitude in the mountains, like as of a great people; a tumultuous noise of the kingdoms of nations gathered together: the LORD of hosts mustereth the host of the battle."
Cross References (ranked by relevance)
Joel 3:14
Multitudes, multitudes in the valley of decision: for the day of the LORD is near in the valley of decision.
Joel 2:25
And I will restore to you the years that the locust hath eaten, the cankerworm, and the caterpiller, and the palmerworm, my great army which I sent among you.
Revelation 18:8
Therefore shall her plagues come in one day, death, and mourning, and famine; and she shall be utterly burned with fire: for strong is the Lord God who judgeth her.