פּירוש אויף יחזקאל 1:24

“I heard the sound of their wings” [1:24]. I heard the sound of the creatures. It was like a loud sound of strong waters, the sound of the living God. Like the sound of a great multitude shouting, and the sound went forth from the heaven that was spread above their heads was like a precious stone that is called sapphire, and the image of a throne and on the throne the image of a man. When the creatures stood still, they let their wings fall to their sides.

like the sound of many waters I would think that the voice was low. Therefore, Scripture adds: like the sound of the Almighty, like the voice delineated in the Holy Writings (Ps. 29:4f.): “The voice of the Lord is in strength, etc. The voice of the Lord breaks the cedars.”

the sound of stirring, like the sound of a camp Like the sound of their speech when they thank and bless their Master; it was like the sound of the camp of the angels on high.

when they would stand, they would let down their wings [and cease] from making a sound be heard, and Jonathan rendered: when they would stand, they would silence their wings because of the speech, [i.e., because of] the speech of the Omnipresent emanating from above their heads, to let the prophets hear His mission, as he [Ezekiel] concludes (verse 25): “And there was a voice, etc.” The Midrash Aggadah (Gen. Rabbah 65:11) states: “When they would stop praising [God] so that Israel would praise first.”