You're obviously a reactionary imperative monger.
Jack be nimble. -> Jack, be he nimble. -> Jack, were he nimble.
Thus:
Jack, were he nimble. Jack, were he quick, Jack, were he all of these, he would jump over the candle-stick.
Or was it all a simple description of material reality:
Jack is nimble. Jack is quick. Jack jumps over the candle-stick.
And why is he jumping over a candle-stick, anyway?
Bill