We often hear that preaching is the essence. Here’s a quote from Srila Prabhupada (Srimad Bhagavatam 6.2.36-37/purport) that supports this statement: One who is interested in his own salvation is not as advanced in Krsna consciousness as one who feels compassion for others and who therefore propagates the Krsna consciousness movement. Such an advanced devotee will never fall down, for Krsna will give him special protection.