The Seven Letters fit onto the menorah as follows
"And unto the angel of the church in Thyatira write; These things says the
Son of God, who has his eyes like unto a flame of fire, and his feet are like fine
bronze" ~ Revelation 2:18 KJV
In this verse we can see the clear description of Messiah being the light-giver
who is Himself lit from the altar of God.
sends Commendation, Rebuke, Exhortation, and Reward.