Ezekiel 1:10-14

Each had a human face in the front, the face of a lion on the right side, the face of an ox on the left side, and the face of an eagle at the back. Each had two pairs of outstretched wings—one pair stretched out to touch the wings of the living beings on either side of it, and the other pair covered its body. They went in whatever direction the spirit chose, and they moved straight forward in any direction without turning around. The living beings looked like bright coals of fire or brilliant torches, and lightning seemed to flash back and forth among them. And the living beings darted to and fro like flashes of lightning.