So one who has not reached to that point, to realize Kṛṣṇa, it is to be understood that his knowledge is still imperfect. But these persons who have got imperfect knowledge, they are passing as Vedāntists and knows everything. They do not know. Kṛṣṇa therefore says, bahūnāṁ janmanām ante (BG 7.19): "These impersonalists, the so-called Vedāntists, the so-called men of knowledge, after many, many births . . ."
Because it is not so easy to understand Kṛṣṇa, the Supreme Person. They'll have to wait for thousands of births to understand Kṛṣṇa. They'll have to wait. Although they are very much proud of their knowledge, we know where they are: partial realization. Of course, they are also in the same field. But they'll not understand the Supreme Person.
Those who understood, the great sages in the beginning, in the beginning of the creation, munayaḥ, great, great sages, Marīci, Ātreya, Vasiṣṭha and others, so they worshiped the Supreme Person, bhagavantam, not the impersonal feature. Impersonal, actually, there is . . . there cannot be any worship of the impersonal feature, Brahman. It is simply accepting some trouble.