shall labour in # 35_HAB_02_13 # Behold, [is it] not of the LORD of hosts that the people shall labour in the very fire, and the people shall weary themselves for very vanity? 
shall labour in # 24_JER_51_58 # Thus saith the LORD of hosts; The broad walls of Babylon shall be utterly broken, and her high gates shall be burned with fire; and the people shall labour in vain, and the folk in the fire, and they shall be weary.