5 “The king of the South will become strong, but one of his commanders will become even stronger than he and will rule his own kingdom with great power.

Read Daniel 11:5 Using Other Translations

And the king of the south shall be strong, and one of his princes; and he shall be strong above him, and have dominion; his dominion shall be a great dominion.
"Then the king of the south shall be strong, but one of his princes shall be stronger than he and shall rule, and his authority shall be a great authority.
“The king of the south will increase in power, but one of his own officials will become more powerful than he and will rule his kingdom with great strength.