So this Kṛṣṇa consciousness movement is meant for taking back all the suffering humanity, all living entities, back to home, back to Godhead. This is the sum and substance of Kṛṣṇa consciousness movement. So, here Kṛṣṇa says that, "I am explaining to you how that knowledge of going back to home, back to Godhead can be attained." Therefore He is saying here, jñānaṁ te ahaṁ sa-vijñānam. Jñānam means theoretical knowledge. That is called jñānam. And sa-vijñānam means practical knowledge. Just like in the scientific department of colleges, there are, for understanding anything scientifically there are two divisions: practical and theoretical. So jñānam is theoretical, and vijñānam means practical. Simply to know there is God, this is theoretical knowledge. But when actually you become connected with God, you practice the activ..., godly activities, that is called vijñānam. So, Kṛṣṇa will explain in this chapter the knowledge of God, both theoretically and practically. Jñānaṁ te 'haṁ sa-vijñānam vakṣyāmi, "I shall speak to you," aśeṣataḥ. Aśeṣataḥ means vividly. Aśeṣataḥ. "And briefly," samanvitāḥ. And when it is said aśeṣataḥ, that means elaborate. But yaj jñātvā, "if somehow or other you understand this knowledge" yaj jñātvā, na iha, "in this material world," iha, iha means this material world; bhūyaḥ, "again"; anyat, "anything more"; jñātavyam avaśiṣyate, "no more," "you require no more further knowledge to understand." That is the statement in the Vedas, yasmin vijñāte sarvam evaṁ vijñātaṁ bhavati (Muṇḍaka Upaniṣad 1.3). If you simply understand Kṛṣṇa, because Kṛṣṇa is everything, so if you understand Kṛṣṇa, automatically you understand what is this world, what is this earth, what is this water, what is this fire. This is material things. What is this air, what is this sky, what is this mind, what is this intelligence, what is this ego, and what is the soul. In this way you understand everything, because these material elements—earth, water, fire, air, sky—that will be explained in the next verse, it is the expansion of Kṛṣṇa's energy. As there are energies and the energetic, just like the fire. The fire has got two energies. One energy is the heat, and one energy is light. Just like in the morning, as soon as you see the light from you window, you can understand that there is sunrise. By the energy, light of the sun, you can understand there is now the sun on the sky. Heat also. When you are too much heated, even within the room, even if you do not see the sun, you can understand that this heat is due to the sun. Similarly, we have to understand the presence of the Supreme Personality of Godhead by perceiving the different energies. Parāsya śaktir vividhaiva śrūyate. At the present moment we are trying to understand the energy of Kṛṣṇa. We cannot see directly Kṛṣṇa. But as soon as you see the energy or you perceive the energy, you can understand there is Kṛṣṇa, there is God. That is called intelligence. This is called jñānam. And when you are directly in connection with Kṛṣṇa, or directly in the service, that is called vijñānam.
- jñānaṁ te 'haṁ sa-vijñānam
- idaṁ vakṣyāmy aśeṣataḥ
- yaj jñātvā na iha bhūyaḥ anyat
- jñātavyam avaśiṣyate
- (BG 7.2)
Now, why this jñānam required? Because our mission of life is to... You can not understand with your foolish brain what is God. That is not possible. They are trying to understand God by the limited senses. How you can understand? We are defective in so many ways. First of all we commit mistakes, and we are illusioned, we try to cheat others, and our senses are imperfect. So, how you can understand with your limited senses, with so many defects? That is not possible. Therefore you have to understand God from God Himself, or from His representative. Therefore Kṛṣṇa said that, mayy āsakta-manāḥ pārtha yogaṁ yuñjan mad-āśrayaḥ. Mad-āśrayaḥ: "directly under My direction, or under the direction of My representative." You cannot understand Kṛṣṇa if you remain under your personal intelligence. Everyone says that "I shall understand this by my own dint of knowledge, by speculation." That is not possible. Kṛṣṇa says that you have to understand. Here also it is the same thing said, jñānaṁ te 'haṁ sa-vijñānam vakṣyāmy aham, "I shall speak to you." So this is the secret of success, if you want to understand God, what is God. Everyone, there are many philosophers, scientists, they are trying to understand God by research, but that research will not help you. You have to understand directly from God, or from God's representative. That is the way.