Daniel 10:13 in the King James Version
But the prince of the kingdom of Persia withstood me one and twenty days: but, lo, Michael, one of the chief princes, came to help me; and I remained there with the kings of Persia.
Context
12 Then he said to me, “Don’t be afraid, Daniel; for from the first day that you set your heart to understand, and to humble yourself before your God, your words were heard. I have come for your words’ sake.
13 But the prince of the kingdom of Persia withstood me twenty-one days; but, behold, Michael, one of the chief princes, came to help me because I remained there with the kings of Persia.
14 Now I have come to make you understand what will happen to your people in the latter days, for the vision is yet for many days.”