UNITY...3

TEMPLE is a 6 letter word
CHURCH is a 6 letter word
MOSQUE is a 6 letter word

Also...

GEETA is a 5 letter word
BIBLE is a 5 letter word
QURAN is a 5 letter word

NAMES ARE DIFFERENT,

BUT THEY ALL TEACH SAME 'HUMANITY', 'PEACE', 'UNITY'