עַל־אַרְבַּ֥עַת רִבְעֵיהֶ֖ן בְּלֶכְתָּ֣ם יֵלֵ֑כוּ לֹ֥א יִסַּ֖בּוּ בְּלֶכְתָּֽן׃
행할 때에는 사방으로 향한 대로 돌이키지 않고 행하며
Rashi on Ezekiel
toward their four sides, etc. Because of the working of the wheels, he had to repeat them [i.e., the description of the living beings’ movements], to say that the wheels did not stop them because they [the living beings] too were made for that [i.e., moving in four directions].