Contemporary English Version
Then the angel said: Now do you understand why I have come? Soon I must leave to fight against the guardian angel of Persia. Then after I have defeated him, the guardian angel of Greece will attack me.

New American Bible
“Do you know,” he asked, “why I have come to you? Soon I must fight the prince of Persia again. When I leave, the prince of Greece will come;

Douay-Rheims Bible
And he said: Dost thou know wherefore I am come to thee? And now I will return, to fight against the prince of the Persians. When I went forth, there appeared the prince of the Greeks coming.

And he said: Dost thou know wherefore I am come to thee? And now I will return, to fight against the prince of the Persians. When I went forth, there appeared the prince of the Greeks coming.

to fight.

Daniel 10:13 But the prince of the kingdom of the Persians resisted me one and twenty days: and behold Michael, one of the chief princes, came to help me, and I remained there by the king of the Persians.

Isaiah 37:36 And the angel of the Lord went out and slew in the camp of the Assyrians a hundred and eighty-five thousand. And they arose in the morning, and behold they were all dead corpses.

Acts 12:23 And forthwith an angel of the Lord struck him, because he had not given the honour to God: and, being eaten up by worms, he gave up the ghost.

the prince of Grecia.

Daniel 7:6 After this I beheld, and lo, another like a leopard, and it had upon it four wings, as of a fowl, and the beast had four heads, and power was given to it.

Daniel 8:5-8,21 And I understood: and behold a he goat came from the west on the face of the whole earth, and he touched not the ground, and the he goat had a notable horn between his eyes. . . .

Daniel 11:2-4 And now I will shew thee the truth. Behold, there shall stand yet three kings in Persia, and the fourth shall be enriched exceedingly above them all: and when he shall be grown mighty by his riches, he shall stir up all against the kingdom of Greece. . . .