Eliphaz is accusing Job of taking land from poor people and not allowing them to live on it. He is emphasizing this point by restating it twice. (See: [[rc://en/ta/man/jit/figs-parallelism]])
Eliphaz is exaggerating the amount of land that Job owned in order to portray Job as greedy. Alternate translation: "possessed a great amount of land" (See: [[rc://en/ta/man/jit/figs-hyperbole]])