Premanand Maharaj Ji
Why is seva so powerful, and should I tell people about my seva?
Seva brings Bhagwan under its influence; don't advertise it
Seva is so pure and powerful that it brings Bhagwan under its influence, as with Hanuman Ji, whom Bhagwan said he could never repay. Do not use seva to promote yourself. When Bhagwan inspires the help and you have neither asked nor advertised, things will happen, because truth cannot stay hidden.
The dharma of seva brings Bhagwan under its influence. Through Hanuman Ji's seva, Bhagwan tells him, 'Dear one, I can never be free of my debt to you.'