How do we live knowing we only live once and are not exempt from sudden tragedy as "other" people who don't trust in God?
The preacher commands the righteous and wise to enjoy life under sun.

Wisdom for a Successful Life - Audio

The main work of ecclēsia is to build up the body of Christ by the consistent teaching of the Bible, book-by-book, chapter-by-chapter, verse-by-verse. The worship is simple, focusing on exalting the Lord.