The Torah does not forbid a man from having multiple wives. Abraham, Jacob, David and Solomon are notable examples of biblical figures who wedded more than one wife.

A close reading, however, reveals that in virtually all cases where our prophets took multiple wives, it was for a specific reason. Abraham married Hagar only after Sarah suggested that he do so because she and Abraham had no children together. Another classic example is Jacob. He married Leah only because he was tricked into it by Laban. Similarly, he took Bilhah and Zilpah at the advice of his first two wives, who wished to bear children through them.

Reference:
Does Jewish Law Forbid Polygamy?