Reggie Joiner said this quote

The lampstand was position strategically to do one things: cast its light on the table and on the bread that represented God's provision and presence. For generations the lampstand of the tabernacle stood to highlight the object that best represented God's goodness and provision, the same object that Jesus would one day use to symbolize His own body. (Jesus compares church to a lampstand in Revelation- a strong reminder of the church's responsibility). Everything about these churches 0 their teaching, practices, and work-- was challenged for one reason in Revelation: They were losing their effectiveness as God's light to their communities.