No, not t-shirts for the band Devo. In fact they are people who are devoted to a religious order or leader.
Constellation
Several words may apply - a club, fanatics, enthusiasts, devotees, activists, addicts
Some collective nouns for people in a religious place are:a congregation of worshipersan assembly of churchgoersa gathering of churchgoersa flock of pilgrims
Mean
The haudensaunee mean irguios
Society of Devotees of the Islamic Revolution was created in 1999.
Buddhist devotees customarily offer food, water, lamps, incense and flowers to the Buddha.
the alvars were vaishnavites (devotees of vishnu) while the nayanars were shaivites (devotees of shiva)
You could easily identify them as devotees of the Goth style of music by the their preference for wearing black clothes.
gamers
the exceptional devotees
They were constructed to hold large no. Of devotees and to provide shelter to them.
village of fowl devotees, volunteer fire department
Devotees, acolytes
Crawling Panther Tattoo - One of the most enduring and powerful tattoo symbols of the 20th century has a history which few tattoo devotees might suspect. The
durga maa protects her devotees in all directions!
Vishnu Sharanam means the total surrender to Vishnu the deity worshipped by the devotee IF you mean Vishnu Sahasranama, it means the One thousand names of Vishnu recited by devotees