'Tumultuous' in the Bible

Why are the nations in tumultuous agitation, and why do the peoples meditate a vain thing?

Hide me from the secret counsel of evil-doers, from the tumultuous crowd of the workers of iniquity,

The noise of a multitude on the mountains, as of a great people; a tumultuous noise of the kingdoms of nations assembled together: Jehovah of hosts mustereth the host of the battle.

And wherever shall pass the appointed staff, which Jehovah shall lay upon him, it shall be with tambours and harps; and with tumultuous battles will he fight with it.

And when they went, I heard the noise of their wings, like the noise of great waters, as the voice of the Almighty, a tumultuous noise, as the noise of a host: when they stood, they let down their wings;