Daniel 10:13
13 eThe prince of the kingdom of Persia withstood me ftwenty-one days, but gMichael, one of the chief princes, came to help me, for I was left there with the kings of Persia,
Daniel 10:20–21
20 Then he said, “Do you know why I have come to you? But now I will return to fight against the qprince of Persia; and when I go out, behold, the prince of rGreece will come. 21 But I will tell you swhat is inscribed in the book of truth: there is none who contends by my side against these except tMichael, your prince.