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 act of placing in a lower rank or position: The refusal to allow women to be educated was part of society's subordination of women to men. 2. the act subordinating, or of making dependent, secondary, or subservient. 3. the condition of being subordinated, or made dependent, secondary, or subservient.