Part of Christ’s priestly role is to tend the lampstands. The OT priest would trim the lamps, remove the wick and old oil, refill the lamps with fresh oil, and relight those that had gone out. Likewise, Christ tends the ecclesial lampstands by commending, correcting, exhorting, and warning (see chs. 2–3) in order to secure the churches’ fitness for service as lightbearers in a dark world.
G. K. Beale, The Book of Revelation: A Commentary on the Greek Text, New International Greek Testament Commentary (Grand Rapids, MI; Carlisle, Cumbria: W.B. Eerdmans; Paternoster Press, 1999), 208–209.