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.
Society for Human Resource Management: Discipline: What constitutes insubordination?; January 26, 2007; U.S. Office of Personnel Management: Resource Center for Addressing and Resolving Poor Performance; New York State Governor's Office of Employee Relations: Introduction to Behavior Problems; Duhaime: Insubordination Definition