This family is spoken of as if it were a tree. The roots represent ancestors, and the branch represents a descendant. Alternate translation: "a descendant of her ancestors" or "one of her descendants" (See: [[rc://en/ta/man/translate/figs-metaphor]])
The word "he" refers to her descendant, and here it also refers to his army. Alternate translation: "He and his army will attack the army of the king of the North" (See: [[rc://en/ta/man/translate/figs-synecdoche]])