Yechezkel 1:4-9

And I looked, and, hinei, a ruach se'arah came out of the tzafon, an anan gadol, and flashing fire, with brilliant light all about it, and out of the midst thereof something gleaming, shining out of the midst of the eish. Also out of the midst thereof came the demut (likeness) of four Chayos. And this was their appearance: they had the demut adam. And every one had arba'ah panim, and every one had arba kenafayim. And their regalim were regel yesharah; and the sole of their feet was like the sole of a regel egel; and they gleamed like the shining of burnished nechoshet. And they had the hands of an adam under their kenafayim on their four sides; and they four had their panim and their kenafayim. Their kenafayim were joined one to another; they turned not as they went; they went every one face forward.