John Gill Commentary Ezekiel 10:9

"And I looked, and behold, four wheels beside the cherubim, one wheel beside one cherub, and another wheel beside another cherub; and the appearance of the wheels was like unto a beryl stone." — Ezekiel 10:9 (ASV)

And when I looked, look, the four wheels by the cherubim ,
&c.] The churches by the ministers: of these "wheels", and why the churches are so called, and of their number "four", and their situation "by" the cherubim, (See Gill on Ezekiel 1:15);

one wheel by one cherub, and another wheel by another cherub :
a minister to a church; every church has its own pastor, elder, or overseer, by it, and over it:

and the appearance of the wheels [was] as the colour of a beryl stone ;
a precious stone of a sea green; (See Gill on Ezekiel 1:16). The Targum renders it in general, "a precious stone"; the Septuagint version, "a carbuncle"; and the Vulgate Latin version, "a chrysolite".