Many people would answer the above question with a single word—God. But significantly, nowhere does the Bible say that either Jesus Christ or his Father are the real rulers of this world.
On the contrary, Jesus said: “The ruler of this world will be cast out.” And he added: “The ruler of the world is coming. And he has no hold on me.”—John 12:31; 14:30; 16:11.
So the ruler of this world is in opposition to Jesus. Who could this be?