Prahlāda Mahārāja says that children should be taught about religious principle, especially bhāgavata dharma. What is dharma and bhāgavata dharma? Bhāgavata dharma means the dharma of the soul, and ordinary dharma means the dharma of this body. Generally we understand the varṇāśrama-dharma, cātur-varṇyaṁ mayā śṛṣṭaṁ guṇa-karma-vibhāgaśaḥ (BG 4.13): the brāhmins, the kṣatriyas, the vaiśyas and the śūdras; brahmacārī, gṛhastha, vānaprastha and sannyāsa.
So actually this is our . . . Vedic principle is varṇāśrama-dharma. So this varṇāśrama-dharma is in relationship with this body. But we are not this body. Dehāntaraṁ prāp . . . we are changing our body. So sometimes we may become a śūdra, sometimes we may become brāhmin—that is change. But when you come to the platform of the soul, na hanyate hanyamāne śarīre (BG 2.20), that dharma, when it begins, the dharma of the soul, that is called bhāgavata-dharma, because when one is, uh . . . I mean, in the platform, on the platform of understanding soul, that is called brahma-jñāna, ātmā-jñāna.
So when one comes to the platform of Brahman understanding, that is called brahma-bhūta (SB 4.30.20). Brahma-bhūtaḥ prasannātmā (BG 18.54): when you come to that platform, understanding of the soul, then you become joyful, free from material anxieties. Just like you are on a ship and it is in danger on the ocean, tottering. At any moment you can drown. But somehow or other, if you come to the land, then you feel safety, "Now I am safe." Similarly, this bodily consciousness—"I am Indian," "I am American," "I am Hindu," "I am Muslim," "I am this," "I am that"—that is just on the tottering sea. But if you come immediately on the spiritual platform, then prasannātmā, "Now I am safe." Brahma-bhūtaḥ prasannātmā na śocati na kāṅkṣati (BG 18.54).