Ezekiel 1:25

Now when they stood still, and had let down their wings, it thundered in the firmament that was above their heads.

Ezekiel 1:22

Above over the heads of the beasts there was a firmament, which was fashioned as it had been of the most pure Crystal, and that was spread out above upon their heads:

Treasury of Scripture Knowledge

Summary

And there was a voice from the firmament that was over their heads, when they stood, and had let down their wings.

And had

Bible References

And had

Ezekiel 1:24
And when they went forth I heard the noise of their wings, like the noise of great waters, as it had been the voice of the great God, and a rushing together as it were of a host of men. And when they stood still, they let down their wings.