The living creatures; angels, ministers of the Divine pleasure, as above, Eze_1:5.
Ran; were speedy in their motions; this signified by this expression figuratively applied to angels.
Returned; yet, Eze_1:9,12, it is said they returned not, where this seeming contradiction is reconciled; the 9th and 12th verse deny their turning aside from their work, this 14th affirms they returned, i.e. when they had done their work.
As the appearance of a flash of lightning; very quick, with vehemency, splendour, and irresistible efficacy.