Another clue may come from the meaning of the name Zerubbabel: The name Zerubbabel consists of two parts. The second part of this name is obviously the same as the Hebrew word for Babel / Babylon. The origin of the first part is a bit of a mystery.
Insubordination is generally a punishable offense in hierarchical organizations which depend on people lower in the chain of command doing what they are expected to do.
The actual behavior or action that supervisors define as insubordinate depends on the employee-supervisor relationship. Also, the manner in which the supervisor issues the work directive and whether the employee actually understands the supervisor's expectations are factors in identifying insubordinate behavior.