Caitanya Caritamrta—Madhyalila-15.108—- For conditioned souls to do devotional service, deity worship is necessary.
934) Whether I know to purify my material condition, I need to do deity worship! Taught by Srila Prabhupada!
————– “Although Deity worship is not essential, the material conditioning of most candidates for devotional service requires that they engage in this activity. When we consider their bodily and mental conditions, we find that the character of such candidates is impure and their minds are agitated. Therefore, to rectify this material conditioning the great sage Närada and others have at different times recommended various kinds of regulations for Deity worship.” ——————-