He's born in a pure family. That's all right. But there are other ceremonies, reformatory ceremonies, and this thread ceremony is also one of the ceremonies. So even taking birth in the brahmin family, he has to undergo the ceremonies to come to the stage of a pure brahmin.
But here, chanting of holy name is so powerful that he does not require even dependence on those ceremonies. Immediately he becomes. Unless a person . . . a boy is born in a brahmin family, but unless he's educated, unless he's purified, he cannot be allowed to perform the sacrificial rites. That means he's dependent on these other processes. So . . . but here a devotee who is chanting without any offense, he becomes immediately purified without depending on the other purificatory process. These things are discussed.
Now, Prahlāda Mahārāja begins his prayer, according to his capacity. So he first of all begins, brahmādayo vayam iva īśa na, na ca udvijantaḥ (SB 7.9.13).
He says: "My dear Lord, here all the demigods, headed by Brahma, they are very nice people. They are not disturbing elements like us. Because . . . I am born of the demon family." The demons are always disturbing. Their business is to nullify the existence of God. Therefore they're always disturbing. If there is a certain class of citizens, if they are simply after agitation that "This government is useless," that means they are disturbing.