Ezekiel 1:17,18

When they went Namely, the wheels; they went upon their four sides The wheels being supposed spherical as a globe, by an exact framing of two wheels one in the other, the four semicircles, which were in two whole wheels, may well be taken for these four sides on which these wheels moved, and such a wheel will readily be turned to all points of the compass. An expressive emblem this of that divine providence which extends alike easily to every part and thing; and, like a wheel or globe, has no beginning, ending, or separation, but is a circumference including the whole of things, and equally acts more or less in every place and part. And they turned, or returned, not when they went That is, they never returned, or went backward, till they came to the end of their course; but proceeded on in one straight course and unbent line of direction. So firm and sure are the methods, so unalterable and constant the purposes of God, and so invariable the obedience and observance of holy angels. So subject to the will of God are all second causes, and so surely does the Divine Providence always accomplish its ends. Thus God speaks of his word and decree, Isaiah 55:11: It shall not return unto me void, but shall accomplish that which I please. To return by the way that he went, is a proverbial speech, signifying a man's missing his aim, or not accomplishing his designs: see 1 Kings 13:9; 2 Kings 19:33. As for their rings, or felloes Namely, the circumference of the wheels; they were so high that they were dreadful Their circuit was so vast as to impress a fear on the beholder. This implied the vast compass of providence, which, as we read, Wis 8:1, reacheth from one end to another mightily, or, as St. Paul expresses it, the height and depth both of the wisdom and knowledge of God, how unsearchable his judgments are, and his ways past finding out, Romans 11:33. And their wings were full of eyes round about them four That is, every one of the four wheels; and so were also the living creatures themselves: see Ezekiel 10:12, to signify the great wisdom and foresight which direct all the dispensations of Divine Providence. How fitly do the wheels, their motion, their height, their eyes, and the form, appearance, motions, wings, and eyes of the living creatures express the height and depth, the unsearchableness, wisdom, and vigilance of the Divine Providence!