Somehow or other, one must consider the form of Kṛṣṇa 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 Kṛṣṇa’s form in any of these five ways, cannot attain salvation. Therefore, one must somehow think of Kṛṣṇa, whether in a friendly way or inimically.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
मातृष्वसेयो वश्चैद्यो दन्तवक्त्रश्च पाण्डव । पार्षदप्रवरौ विष्णोर्विप्रशापात्पदाच्च्युतौ
mātṛṣvaseyo vaścaidyo dantavaktraśca pāṇḍava | pārṣadapravarau viṣṇorvipraśāpātpadāccyutau
SB 7.1.32