יחזקאל, פרק א׳, פסוק ט׳

The movement of the holy creatures is defined by absolute coordination, flawless unity, and a total peripheral awareness that allows them to travel in any direction without physical limitation. Their wings are spread side by side, touching edge to edge to form a continuous sequence that covers their faces from above [רש״י, מצודת דוד]. Beyond a simple physical description, this touching of wings reflects a profound spiritual reality. While the creatures are distinct entities and lack the absolute, perfect unity that belongs solely to God, they are still deeply bound together. Their connection is forged through a pure, shared intellectual grasp that transcends the normal boundaries of time and space [מלבי״ם].

Because these beings possess faces looking outward in all four directions, their travel is entirely unique. They never need to pivot or turn their bodies to change their course. Whenever they wish to head in a new direction, they simply move straight ahead, following the face that is already looking that way [רש״י, מצודת דוד, ביאור שטיינזלץ]. As they advance, they propel themselves using the specific pair of wings associated with the face leading the way [מלבי״ם].

Both the physical connection of the wings and the straight path of their travel serve as strong evidence against the philosophical idea that these creatures represent celestial spheres. If they were mere heavenly spheres, their main bodies might be connected, but their wings, which represent independent and opposing forces of motion, would remain separate. Furthermore, the very nature of a celestial sphere is to travel in a constant, repeating circle. The fact that these holy creatures move in straight lines without ever turning their bodies clearly proves they are entirely different entities [אברבנאל].