Visvambhara: Why is it sometimes if we are sincerely trying to serve Krsna we still make mistakes? We make in our service some mistakes.

Prabhupada: You must always remember that service means by the order of the master. So if you should always be ready to take order from the master, there will be no mistake.

Devotee: So that would mean that all mistakes come from the false ego?

Prabhupada: Yes. When you disobey the order of master, that is mistake.

(August 5, 1976, New Mayapur)