Those who are devotees, they assemble together. Bodhayantaḥ parasparam. In the Bhagavad-gītā it is said: "They discuss about the glories of the Lord." Bodhayantaḥ parasparam. That is sādhu-saṅga (CC Madhya 22.83). We have also discussed this. Satāṁ prasaṅgān mama vīrya-saṁvido bhavanti hṛt-karṇa-rasāyanāḥ (SB 3.25.25). When things are discussed about the Supreme Personality of Godhead amongst the devotees, it becomes a different thing than the discussion in the debating club of the nondevotees. The kṛṣṇa-kathā is not a subject matter for debating club. It is meant for the devotees. Without devotees, nobody can understand. The others, who are not devotee, they simply waste their time in reading Bhagavad-gītā or Śrīmad-Bhāgavatam, such literature. They simply waste their time, because these subject matters are for the devotees.
We have several times discussed this point that the so-called scholars, politicians and philosophers, they read Bhagavad-gītā and comment in a different way. This is their foolishness. They cannot understand Bhagavad-gītā. It is not possible. My Guru Mahārāja used to say: "It is just like licking the bottle of honey." Now you want honey. I give you one bottle, but you do not know how to taste it. You began to lick up the bottle. So what you will taste? If you think, "Here is the bottle of honey. Let me lick," you will not get any taste. It must be opened. But the opening key is with the devotee. You do not know how to open it. Therefore it is said, satāṁ prasaṅgān mama vīrya-saṁvido bhavanti hṛt-karṇa-rasāyanāḥ (SB 3.25.25). The devotees know how to open it, the bottle. And then they can taste. Therefore, sabhājayante yatra pauruṣāṇi.
In the Bhagavad-gītā Kṛṣṇa says to Arjuna that, "I am speaking to you this science of Bhagavad-gītā." Imaṁ vivasvate yogaṁ proktavān aham avyayam (BG 4.1). Idaṁ yogam. Bhagavad-gītā means bhakti-yogam. So Kṛṣṇa said formerly, say, four hundred millions of years ago. Bhagavad-gītā is not new. It is . . . first of all it was spoken to sun-god, and from the Manu's age and others' age we can calculate it is about some millions of years ago it was spoken. Imaṁ vivasvate yogaṁ proktavān aham avyayam (BG 4.1). So Kṛṣṇa said: "That very old yoga system I am speaking to you again. It is not a new thing that I am manufacturing for you. No." Everything . . . God is eternal, and His instruction is also eternal. And the followers are also eternal. There is nothing new. Nityaḥ śāśvato 'yaṁ purāṇaḥ. Nityaḥ śāśvato 'yaṁ purāṇaḥ. Very old, but still, it is eternal and fresh. This is spiritual matter. You read Bhagavad-gītā. It was spoken four hundred millions of years ago, and then again, five thousand years ago. Still, if you read Bhagavad-gītā daily, you will find it fresh. You will never find it old. As Kṛṣṇa is never old, advaitam acyutam anādim ananta-rūpam ādyaṁ purāṇa-puruṣam (Bs. 5.33)—Kṛṣṇa is the purāṇa, the oldest man—but nava-yauvanaṁ ca. But He is always . . . see. You will find Kṛṣṇa just a young boy of twenty years. Nava-yauvanaṁ ca. So similarly, Kṛṣṇa's words, everything Kṛṣṇa, absolute. His name, His form, His quality, His activities—they are all fresh and new. Otherwise, how the devotees can glorify the same Kṛṣṇa daily with greater enthusiasm? Greater enthusiasm. The more you glorify, you'll feel more enthusiastic to more glorify, glorify, glorify.