Adam Clarke on Ezekiel 1:4

A whirlwind came out of the north - Nebuchadnezzar, whose land, Babylonia, lay north of Judea. Chaldea is thus frequently denominated by Jeremiah.

A great cloud, and a fire infolding itself - A mass of fire concentrated in a vast cloud, that the flames might be more distinctly observable, the fire never escaping from the cloud, but issuing, and then returning in upon itself. It was in a state of powerful agitation; but always involving itself, or returning back to the center whence it appeared to issue.

A brightness was about it - A fine tinge of light surrounded the cloud, in order to make its limits the more discernible; beyond which verge the turmoiling fire did not proceed.

The color of amber - This was in the center of the cloud; and this amber-coloured substance was the center of the laboring flame. The word ηλεκτρον, which we translate amber, was used to signify a compound metal, very bright, made of gold and brass.