12. The same idea as in Eze 1:9. The repetition is because we men are so hard to be brought to acknowledge the wisdom of God's doings; they seem tortuous and confused to us, but they are all tending steadily to one aim.
      the spirit--the secret impulse whereby God moves His angels to the end designed. They do not turn back or aside till they have fulfilled the office assigned them.

JFB.