scepter

Definition:

The term "scepter" refers to an ornamental rod or staff held by a ruler, such as a king.

Scepters were originally a branch of wood with carved decorations. Later scepters were also made of precious metals such as gold.
The scepter was a symbol of royalty and authority and also symbolized the honor and dignity associated with a king.
In the Old Testament, God was described as having a scepter of righteousness because God rules as king over his people.
An Old Testament prophecy referred to the Messiah as a symbolic scepter that would come from Israel to rule over all nations.
This could also be translated as "ruling rod" or "king's rod.