Ezekiel 1:21
When those went, these went; and when those stood, these stood; and when those were lifted up from the earth, the wheels were lifted up over against them: for the spirit of the living creature was in the wheels.
Cross-reference
Ezekiel 1:19
Parallel
Ezekiel 1:19 similarly states that wheels moved beside the creatures, but without the explanation that the spirit was in the wheels.
Ezekiel 1:20
Parallel
Ezekiel 1:20 says the same thing: wherever the spirit went, they went, because the spirit was in the wheels.
Ezekiel 1:12
Parallel
Ezekiel 1:12 shows the living creatures moving straight wherever the spirit goes, explaining the coordinated movement of the wheels described here.
Ezekiel 10:17
Parallel
Ezekiel 10:17 repeats the exact same phrase about the spirit in the wheels causing coordinated movement.