'Succeed' in the Bible
Mighty will be his skills, but not from his own abilities. He'll be remarkably destructive, will succeed, and will do whatever he wants, destroying mighty men and the holy people.
When that army has been defeated, he'll become overconfident and slaughter many thousands, but he won't succeed.
He'll decide to come with the full power of his kingdom, bringing with him an alliance that he'll implement. He'll give him a daughter in marriage to overthrow it, but it won't succeed or work out for him.
He'll encourage himself against the southern king by raising a large army. As a result, the southern king will mobilize for war with a large and powerful army, but he won't succeed because they will devise elaborate schemes against him.
Now as for the two kings, their intentions will be evil, and they'll promote deception at their dinner table, but none of this will succeed, because the end won't have come yet.
""The king will do as he pleases. He'll exalt and magnify himself above every god, speaking amazing things against the God of Gods. He'll succeed until the indignation is completed, because what has been determined must be carried out.