Devotee's business is to glorify. He doesn't take any credit for himself. Actually, there is nothing to be taken credit. The all credit goes to Krsna. A devotee neither claims; neither it is possible. Even he may be very, very big devotee, he will never claim any credit for his glorious activities. His glorious activities means to make Krsna glorious. That is his glorious activities. Not that like the so-called materialist, he wants to take the credit.
From Srila Prabhupada's class on Srimad-Bhagavatam 3.26.42 — January 17, 1975, Bombay