In Deep Space Nine Season 6, Episode 16 "Change of Heart" roughly 3 minutes into the episode, Jadzia and Worf are getting ready for bed and talking business/work. Worf lights candles and opens a small box-like shrine, not unlike Hindu or Catholic (Mary) boxes. Jadzia turns her mirror and she see Worf praying or meditating to the figure in the altar and stops mid sentence.
Honestly, at first I thought Worf had a mirror and Jadzia saw someone in the room and only after going back did I see Worf had opened the doors on the box.
What is the shrine and what is it's importance to Worf and other Klingons?
To clarify: I know it's a shrine, and I suspected who was in it. Answering with "It's a Shrine to [blank]" is not an answer. I am looking for focused details about Worf's and the Klingon's beliefs that relate to this shrine.