Daniel 10:13
However, the prince of the kingdom of Persia opposed me for twenty-one days. Then Michael, one of the chief princes, came to help me, for I had been left there with the kings of Persia.
Berean Standard Bible
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.
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.