SB 10.28.15

satyaṁ jñānam anantaṁ yad
 brahma-jyotiḥ sanātanam
yad dhi paśyanti munayo
 guṇāpāye samāhitāḥ
Word for word: 
satyam — indestructible; jñānam — knowledge; anantam — unlimited; yat — which; brahma — the absolute; jyotiḥ — effulgence; sanātanam — eternal; yat — which; hi — indeed; paśyanti — see; munayaḥ — sages; guṇa — the modes of material nature; apāye — when they subside; samāhitāḥ — absorbed in trance.
Translation: 
Lord Kṛṣṇa revealed the indestructible spiritual effulgence, which is unlimited, conscious and eternal. Sages see that spiritual existence in trance, when their consciousness is free of the modes of material nature.
Purport: 

In text 14 Lord Kṛṣṇa revealed to the residents of Vṛndāvana His own abode, the spiritual planet of Kṛṣṇaloka. This and innumerable other Vaikuṇṭha planets float in an infinite ocean of spiritual light called the brahmajyoti. That spiritual light is in fact the spiritual sky, which Kṛṣṇa also, quite naturally, revealed to the residents of Vṛndāvana. For example, if we want to show the moon to a child, we say, “Look up in the sky. See the moon over there in the sky.” Similarly, Lord Kṛṣṇa revealed the vast spiritual sky to the residents of Vṛndāvana, but as emphasized in text 14 and in the following text, 16, the actual destination of the Lord’s associates was His own spiritual planet.