"First of all, we have to see who is going to talk about Kṛṣṇa. Is he a devotee of Kṛṣṇa? Is he vaiṣṇava or not? If not, reject immediately: "Oh, we will not listen to you." But people don't know. Any shamelessness that speaks about the Bhagavad-gītā is heard. That's not the process. Then you will misunderstand it. Avaiṣṇava-mukhod..., sarpocchiṣṭaṁ payo yathā. Just as milk is a very good food, everyone knows it. But when it is touched by the serpent's language, it is immediately poisoned. Then we can't drink it. Do not listen to the Bhagavad-gītā or any talk about Kṛṣṇa from a person who is not vaiṣ