Daniel 4:13

I saw in the visions of my head upon my bed, and, behold, a (g) watcher and an holy one came down from heaven;

(g) Meaning the angel of God, who neither eats nor sleeps, but is always ready to do God's will, and is not infected with man's corruption, but is always holy. And in that he commands to cut down this tree, he knew that it would not be cut down by man, but by God.