The First Commandment says, ‘You shall have no other gods before Me.’ That proves He isn’t the only God!"

That’s true. Man has always made false gods. An old adage says, "God created man in His own image, and man has been returning the favor ever since." Hindus have millions of gods. Sometimes gods are made of wood or stone, other times man makes up a god in his mind. Whatever the case, making a god to suit yourself is called "idolatry," and is a transgression of both the First and Second of the Ten Commandments.