NET
13 However, the prince of the kingdom of Persia was opposing me for twenty-one days. But Michael, one of the leading princes, came to help me, because I was left there with the kings of Persia.
Darby
13 But the prince of the kingdom of Persia withstood me one and twenty days; and behold, Michael, one of the chief princes, came to help me; and I remained there with the kings of Persia.
KJV
13 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.