Daniel 8:27

8:27 I, Daniel, was exhausted and sick for days. Then I got up and again carried out the king’s business. But I was astonished at the vision, and there was no one to explain it.

Daniel 10:20

10:20 He said, “Do you know why I have come to you? Now I am about to return to engage in battle with the prince of Persia. When I go, the prince of Greece is coming.