God will die if you do not supply. And this is the ecstasy of extreme love. So there is such relationship with Kṛṣṇa and His devotees. Rādhārāṇī, the greatest devotee, the greatest lover of Kṛṣṇa. (break) Nanda-Yaśodā, the lover as parent. Sudāmā, a friend, lover as friend. Arjuna, lover as friend. Similarly, there are millions and trillions of different kinds of devotees of Kṛṣṇa. They are directly playing.
So this yoga system, as described herein, bhakti-yoga, it can be practiced by such persons who have developed such attachment for Kṛṣṇa. Others cannot. And if anyone is able to develop such attachment, then the result will be that he will understand God, or Kṛṣṇa, perfectly. However we may try to understand what is God by our different theories or speculation, it is a very difficult job to understand what is God. We may say that I have..., we have understood what is God, but it is not possible to understand God as He is, because we have got our limited senses and He is unlimited. How you can capture the Unlimited with your limited sense? But it is possible.
It is said in the Śrīmad-Bhāgavatam, ataḥ śrī-kṛṣṇa-nāmādi na bhaved grāhyam indriyaiḥ (CC Madhya 17.136). Our senses are imperfect always. Even we cannot understand perfectly the material world. Just like we have seen so many planets and stars in the sky at night, but we do not know what they are. We do not know even what is this moon planet. We are trying for so many years, trying to go there in sputnik and... Even one planet. Even we do not know what varieties are there even in this planet. If you go on the sea, if you go on the sky, you are perfectly illusioned. So our knowledge is always imperfect. That we must admit. Foolishly, if we think we have acquired all sorts of knowledge, we have advanced in science, this is another foolishness. It is not possible. So when it is not possible to understand even the material things which we are daily seeing with our eyes and perception, what to speak of spiritual? And the Kṛṣṇa, or the Supreme Personality of Godhead, He is the Supreme spiritual form. So it is not possible for us to understand Kṛṣṇa by our limited senses. Then why we are bothering so much for Kṛṣṇa consciousness if it is not possible?