Please add spaces between words: ThepurposeofanecclesiaistobuildupitsmembersthroughcollectiveBiblestudy,andalsotocollectivelywitnesstotheworldbylettingtheirlightshinethroughpreaching.
The purpose of an ecclesia is to build up its members through collective Bible study, and also to collectively witness to the world by letting their light shine through preaching.