Devotion is like the mother. From the mother comes many children, then grandchildren, then all the generations. Like that, from devotion all the qualities come, the realizations and all the qualities. From devotion comes the understanding of Dharma words and then the realization of their meaning. From devotion so many qualities come, and also with devotion you are able to protect those qualities.
Lama Zopa Rinpoche
These teachings were given by Lama Zopa Rinpoche at Root Institute, Bodhgaya, India, between December 26-31, 2006. Rinpoche describes the mystery of the guru deity and discusses the importance of guru devotion in developing all the qualities on the path to the enlightenment. Those who live their lives infused with devotion can progress much more quickly than by intellect alone. Rinpoche then illustrates this phenomena with engaging stories from his youth. You can read along with the transcript by visiting https://www.lamayeshe.com/article/chapter/day-four-meaning-guru-devotion