SB 10.13.3

śṛṇuṣvāvahito rājann
 api guhyaṁ vadāmi te
brūyuḥ snigdhasya śiṣyasya
 guravo guhyam apy uta
Synonyms: 
śṛṇusva — please hear; avahitaḥ — with great attention; rājan — O King (Mahārāja Parīkṣit); api — although; guhyam — very confidential (because ordinary men cannot understand the activities of Kṛṣṇa); vadāmi — I shall explain; te — unto you; brūyuḥ — explain; snigdhasya — submissive; śiṣyasya — of a disciple; guravaḥ — spiritual masters; guhyam — very confidential; api uta — even so.
Translation: 
O King, kindly hear me with great attention. Although the activities of the Supreme Lord are very confidential, no ordinary man being able to understand them, I shall speak about them to you, for spiritual masters explain to a submissive disciple even subject matters that are very confidential and difficult to understand.