SB 7.1.32
katamo ’pi na venah syat
pañcanam purusam prati
tasmat kenapy upayena
manah krsne nivesayet
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Somehow or other, one must consider the form of Krsna very seriously. Then, by one of the five different processes mentioned above, one can return home, back to Godhead. Atheists like King Vena, however, being unable to think of Krsna’s form in any of these five ways, cannot attain salvation. Therefore, one must somehow think of Krsna, whether in a friendly way or inimically.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Impersonalists and atheists always try to circumvent the form of Krsna. Great politicians and philosophers of the modern age even try to banish Krsna from Bhagavad-gita. Consequently, for them there is no salvation. But Krsna’s enemies think, “Here is Krsna, my enemy. I have to kill Him.” They think of Krsna in His actual form, and thus they attain salvation. Devotees, therefore, who constantly think of Krsna’s form, are certainly liberated. The only business of the Mayavadi atheists is to make Krsna formless, and consequently, because of this severe offense at the lotus feet of Krsna, they cannot expect salvation. Srila Visvanatha Cakravarti Thakura says in this connection: tena sisupaladi-bhinnah pratikula-bhavam didhisur yena iva narakam yatiti bhavah. Except for Sisupala, those who go against the regulative principles cannot attain salvation and are surely destined for hellish life. The regulative principle is that one must always think of Krsna, whether as a friend or enemy.