What other organizations are impressed by is the dedication of Srila Prabhupada's disciples – willing to go anywhere, do anything, any time to make spiritual advancement, to preach Krishna Katha and to please devotees.
Test of Spiritual advancement : Eagerness to hear Krishna Katha increases & that for mundane talk decreases.
The more, progress is made in devotional service under the guidance of the Bhagavatas, the more one becomes fixed in the transcendental loving service of the Lord. The messages of the book Bhagavata, therefore, has to be received from the devotee Bhagavata and the combination of these two Bhagavatas will help the neophyte devotee to make progress.
A devotee should not be proud of his acquisitions. The symptoms of a devotee are meekness and humility. Although spiritually very advanced, he will always remain meek and humble, as Krishna Das Kaviraja Gosvami and all the other Vaisnavas have taught us by personal example. Caitanya Mahaprabhu taught that one should be humbler than the grass on the street and more tolerant than the tree. One should not be proud or falsely puffed up. In this way one will surely advance in spiritual life.
Simply by associating with a pure devotee, one becomes wonderfully advanced in Krishna Consciousness. Sadhu-sanga, or association with a devotee, means always engaging in Krishna Consciousness by chanting the Hare Krishna mantra but he whose heart is contaminated sees things differently. Therefore by sat-sanga, or association with devotees, one becomes perfectly pure in heart.
A devotee searches out a pure devotee and simply by his association becomes more advanced in spiritual consciousness than any yogi.