Ezekiel 10:8-11

(All the cherubim had what looked like human hands under their wings.) I looked, and each of the four cherubim had a wheel beside him, and the wheels sparkled like beryl. All four wheels looked alike and were made the same; each wheel had a second wheel turning crosswise within it. The cherubim could move in any of the four directions they faced, without turning as they moved. They went straight in the direction they faced, never turning aside.