'Great Things' in the Bible

I was considering about the horns, and lo, another horn, a little one, hath come up between them, and three of the first horns have been eradicated from before it, and lo, eyes as the eyes of man are in this horn, and a mouth speaking great things.

and concerning the ten horns that are in its heads, and of the other that came up, and before which three have fallen, even of that horn that hath eyes, and a mouth speaking great things, and whose appearance is great above its companions.