When you build a new house, then you shall make a parapet for your roof, that you bring not the guilt of blood upon your house, if any man fall from there.
All Commentaries on Deuteronomy 22:8 Go To Deuteronomy 22
Richard Challoner
AD 1781
Battlement: This precaution was necessary, because all their houses had flat tops, and it was usual to walk and to converse together upon them.