“If one carries..fulfills the order of the Guru carefully, one can cross over all obstacles in spiritual life. Vedas also say sarva deva moyi guru.
Within the Guru are all the Devas. So in the vaishnava tradition of our sampradaya, instead of worshiping Ganesha when we begin anything auspicious, which is the normal Karma Kanda system, we worship Guru.
Om ajnana-timirandhasya jnananjana-salakaya
Caksur unmilitam yena tasmai sri-gurave namah
Within the Guru, Ganesh is there, all the Devas are there. So that is our system. We always first, adau guru, we first worship the Guru in any auspicious ceremony. When we do deity worship, we first do Guru Puja. Then we do the other worship.
So by mercy of Guru, we get the mercy of Krishna.”HH Jayapataka Swami Vyasa Puja Lecture