To serve a devotee, to chant the holy name according to a certain counting method,  to worship the Deity, to hear Srimad-Bhagavatam or Bhagavad-gita from a realized person and to live in a sacred place where devotional service is not disturbed are the first out of sixty-four devotional activities for making progress in devotional service. One who has accepted these five chief activities is called a devotee.

Srila Prabhupada/ SB 3.32.42 ppt.