He says, therefore, that the glory of the God of Israel ascended from the cherub to the threshold. He takes the glory of God for God himself, as we may readily collect from the next verse; for he says that Jehovah had spoken. But this speech agrees very well, because God cannot be comprehended by us, unless as far as he accommodates himself to our standard. Because therefore God is incomprehensible in himself, nor did he appear to his Prophet as he really is, (since not angels even bear the immense magnitude of his glory, much less a mortal man,) but he knew how far it was expedient to discover himself, therefore the Prophet here takes his glory for himself; that is, the vision, which was a sign or symbol of the presence of God. But he says that it ascended from the cherub. Here also is a change of number, because God is said everywhere to sit between the cherubim. (2 Sam. 6:2; 2 Kings 19:15; Is. 37:16.) But here only one cherub is put, but this figure of speech is well understood, as it is so common, for God resided between the cherubim: it is said that he went thence to the threshold of the temple. This was a prelude to departure, as we shall afterwards see. And this testimony was needful to the Jews, because they thought that God was bounded by the visible temple. Hence the Prophet shows that God was not fixed to a place, so as to be compelled to remain there. This is the reason why it is said that he came from his seat to the threshold of the temple. Now, he adds, that he cried out to the man clad in the linen garment, and whose inkhorn was by his side, though others translate it writing-tablets: but as he afterwards says, write on their foreheads, it is very probable that the ink was in his girdle, that he might mark the elect of God, that the Chaldeans should not touch them. Again he calls the angel a man, but on account of the form which he put on, as I said before. I cannot proceed further.

Calvin, J., & Myers, T. (2010). Commentary on the First Twenty Chapters of the Book of the Prophet Ezekiel (Vol. 1, p. 304). Bellingham, WA: Logos Bible Software.