O King (Pariksit), kindly hear me (Sukadeva Gosvami) with great attention. Although the activities of the Supreme Lord (Krsna) are very confidential, no ordinary man being able to understand them, I shall speak about them to you - SB 10.13.3

Expressions researched:
"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"

Srimad-Bhagavatam

SB Canto 10.1 to 10.13

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.

SB 10.13.3, 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.