Kṛṣṇa is īśvara, supreme controller. Just like in your Institute there is a director who gives you direction, similarly, the supreme director, artist, is Kṛṣṇa. Īśvaraḥ paramaḥ. He is giving direction. Īśvara, controlling everything. Here in this material world we have got experience of a controller. Every one of us is a controller. You are controller, I am a controller. But above me there is another controller. And above that controller there is another controller, another, another controller. You go on searching out controller after controller. When you come to the supreme controller, that He is not controlled by everyone but He controls everyone, that is Kṛṣṇa. That is Kṛṣṇa. Īśvaraḥ paramaḥ kṛṣṇaḥ sac-cid-ānanda-vigrahaḥ (Bs. 5.1). This is our definition of God. God means controller.
So everyone is controller. In that sense everyone is God. But everyone is not supreme God, er, supreme controller. Suppose I am controlling some of my students. But I am being controlled by somebody else. Similarly, he is also controlled by somebody else. That is our practical experience. But the supreme controller means who is not controlled by anyone, but He is controller of everyone. That is God. Nowadays it has become a cheap business, to see so many Gods. But you test this, whether he is controlled by anyone. If he is controlled by somebody, then he is not God. If He is simply controller, then you can accept Him as God. That is the definition of God, a very simple definition.