The menorah was a very sacred fixture in the temple worship of ancient Israel.
"Even as the glory of God gave the only light within the sacred Holy of Holies, the menorah gave the only light within the inner court"
(Klein, Spears, 2007, pg. 117).
Also included in the temple worship was the Ark of the Covenant, the table, the altar of burnt offerings, the priestly garments, numerous sacred implements, and various other pieces of equipment. God gave Moses very specific instruction in Genesis 5 for how all of these items were to be made.
The menorah was hammered out of a single lump of pure gold that weighed over ninety pounds. It has seven branches that are hollow to allow oil to flow to its bowls. The flames represent the holy spirit and provided the only light for the inner court.
The center lamp is referred to as the "ner tamid" or "eternal light" (LeviticusThe 24:2). This center light is also called the "shamash", or "servant" because it was used to rekindle the remaining six lights on the menorah whenever they were trimmed. The shamash of the menorah represents the Messiah. The shamash was the only lamp of the menorah that was required to be lit by the fire of the altar alone. This is an extremely symbolic fact that echoes through the book of Revelation. One interesting fact about the menorah is the meaning of its branches. The Hebrew word for "branch" is "netzer, from which the town of Nazareth derives its name.