Qualifications of Sukadeva Goswami...

Verse 1.4.7 and 8: Here Saunaka Rishi is asking questions to Sukadeva Goswami and at the same time is glorifying the exhalted qualities of Srila Sukadeva Goswami.
1st point: Bhagavatam is not an imaginary story, as it is considered by unauthorized people. It is an open secret, the transcendental essence of all the vedas. Unless we know this, we will not be getting any realizations from the bhagavatam.

2nd verse: Sukadeva Goswami used to get alms from householders. He would only stay long enough for a cow to be milked. In this case, the quality of a sannyasi is highlighted, of how he is a rolling stone. He is constantly moving from one place to other, so that he does not accumulate the conditioning from householders. Srila Prabhupada says: One who is in the renounced order of life should not be allured by the glamor of the householder's worldly possessions and thus become subservient to worldly men.

This also applies to preachers, who should not be affected by the attachments of worldly men. We should give association of the worldly minded people, but not take association from them.