John Gill Commentary Ezekiel 10:20

"This is the living creature that I saw under the God of Israel by the river Chebar; and I knew that they were cherubim." — Ezekiel 10:20 (ASV)

This [is] the living creature that I saw under the God of
Israel, by the river of Chebar
This is repeated from (Ezekiel 10:15) ; not only for the confirmation of it; but with an addition, to show that the appearance of the man upon the throne, (Ezekiel 1:26) , is no other than the God of Israel; and inasmuch as Christ is there meant, for the Father never appeared in a human form, it follows that Christ is the God of Israel, under whose power, protection, and influence, the cherubim, his ministers, are; and so this is a proof of the true and proper deity of Christ: and I knew that they [were] the cherubim ;
not by having seen the cherubim on the mercy seat, and comparing these forms with them, which none but a high priest could ever see; for, though Ezekiel was a priest, it does not appear that he was a high priest; but by the forms of them he had seen carved on the doors and walls of the temple, (1 Kings 6:29 1 Kings 6:35) .