BG Chap 12 - The inferior process of the impersonalists
The worshipers of Brahman completely control all of the senses, withdrawing them from the sense objects, seeing the friend, the well wisher, the enemy and the neutral person equally. Another meaning is that, since they see Brahman situated in all living and non-living entities—everything being the abode of Brahman—they do not have enmity towards anything. They endeavor for the auspiciousness of all beings.
Those who are attached to the impersonal realization encounter extreme difficulties, and thus advancement for them is very troublesome. The unmanifest goal brings suffering to those who are embodied. The embodied soul’s senses are always demanding engagement and want to contact sense objects. The senses have the power for particular knowledge such as sound, not for something other than particularity. Therefore, stopping the senses is necessary for those who desire knowledge of the impersonal without particulars. But stopping senses is like stopping rivers. Nor is the impersonalist able to fix his mind upon the goal of his meditation practices. For how can one conceive the inconceivable? And the goal attained by the impersonalists with so much suffering can be attained only by having a mixture of bhakti. Otherwise, they will attain only suffering and not Brahman, as confirmed by Brahmā in Bhāgavatam 10.14.4, where he says that one who simply speculates gains only trouble and cannot achieve self realization. The devotees also endure difficulty in withdrawing the senses from objects other than the Lord and in engaging in the various aṅgas of bhakti. But they do not experience the same suffering because of the dazzling attraction of Kṛṣṇa’s blissful form.