The Krsna conscious, Krsna’s devotee, also take up the business of Krsna by this Krsna consciousness movement, and it will do good to him and as well as to the persons amongst whom he will preach. But preach. Don’t manufacture preaching. Preach as it is in the sastra. That is Caitanya Mahaprabhu’s instruction: yare dekha tare kaha ‘krsna’-upadesa.

You do not become a rascal guru yourself by manufacturing some imagination, “You do this. Give me some money and you become God, you become this, you become…” This rascaldom don’t do. One thing do. What is that? What is said by Krsna, you say. That’s all. What is the difficulty? What Krsna has said, you say. Man-mana bhava mad-bhakto mad-yaji mam namaskuru.

From Srila Prabhupada’s lecture on Sri Caitanya-caritamrta, Madhya-lila 20.112 — July 20, 1976, New York