1. The servant should be as good as the master

    The servant should be as good as the master. That is servant. Because sometimes servants may be challenged. So that is the qualification of Krsna's servant. Krsna's servants must be always equipped, because they have to meet so many opposing elements. Paritranaya sadhunam vinasaya ca duskrtam. Practically the whole material world is full of duskrtam. They want to create God. They don't want to become the servant of God. That is their challenge. Therefore, anyone who is claiming to become a servant of God, Krsna, must be well equipped to meet the challenging spirit of others.

    From Srila Prabhupada's lecture on Srimad-Bhagavatam 6.1.37 — San
    Francisco, July 19, 1975