four had one likeness - In the wonderful variety of God’s works there is the greatest harmony: -
“In human works, though labored on with pain,
One thousand movements scarce one purpose gain;
In God’s one single doth its end produce,
Yet serves to second, too, some other use.”
(See on Eze 1:16).
wheel ... in ... a wheel - cutting one another at fight angles, so that the whole might move in any of the four directions or quarters of the world. God’s doings, however involved they seem to us, cohere, so that lower causes subserve the higher.