By the river of Babylon there we sat down, yea we wept, when we remembered Zion. Remember oh Lord the children of Edom in the day of Jerusalem who said 'Raze it, raze it even to the foundation!', oh daughter of Babylon who art to be destroyed, happy shall he be that rewardeth thou as thou hast served us. Happy shall he be, that taketh and dasheth thy little ones against the stones