Yes, as GBC member your task is very responsible. You must always keep yourself pure and in this way your preaching work will take effect. Others are also speaking Bhagavad-gita but their speech has no effect because they are not following the regulative principles of devotional service. Also, always maintain Sankirtana Party, prasadam, chant 16 rounds and read all our literature. These things keep you always in touch with Krishna, and Krishna will give you intelligence more and more how to spread this movement. "I dwelling in their hearts destroy with the shining lamp of knowledge the darkness born of ignorance'' [Bg. 10.11].
Letter to Krsna das, 18 December, 1970