What does Ezekiel 1:4 mean?

And I looked, and, behold, a stormy wind came out of the north, a great cloud, with a fire infolding itself, and a brightness round about it, and out of the midst thereof as it were glowing metal, out of the midst of the fire.

And I looked, and, behold, a whirlwind came out of the north, a great cloud, and a fire infolding itself, and a brightness was about it, and out of the midst thereof as the colour of amber, out of the midst of the fire.

And I looked, and, behold, a stormy wind came out of the north, a great cloud, with a fire infolding itself, and a brightness round about it, and out of the midst thereof as it were glowing metal, out of the midst of the fire.

And, looking, I saw a storm-wind coming out of the north, a great cloud with flames of fire coming after one another, and a bright light shining round about it and in the heart of it was something coloured like electrum.

And I look, and lo, a tempestuous wind is coming from the north, a great cloud, and fire catching itself, and brightness to it round about, and out of its midst as the colour of copper, out of the midst of the fire.

And I saw, and behold a whirlwind came out of the north: and a great cloud, and a fire infolding it, and brightness was about it: and out of the midst thereof, that is, out of the midst of the fire, as it were the resemblance of amber:

And I looked, and behold, a stormy wind came out of the north, a great cloud, and a fire infolding itself, and a brightness was about it, and out of the midst thereof as the look of glowing brass, out of the midst of the fire.