And when they went, I heard the noise of their wings, like the noise of great waters, as the voice of the Almighty, the voice of speech, as the noise of an host: when they stood, they let down their wings.
As the voice of the Almighty - the thunder (Psalms 29:3-4).
The voice of speech - rather х hªmulaah (H1999)], 'the voice or sound of tumult,' as in Jeremiah 11:16. From an Arabic root, meaning the impetuous rush of heavy rain.
As the noise of a host - (Isaiah 13:4, "The noise of a multitude ... a tumultuous noise of the kingdoms of nations gathered together;" Daniel 10:6, "The voice of His words like the voice of a multitude").