 On Tisha B'Av, by candlelight, sitting on the floor in a sign of mourning, Jews listened to the entire book of Echa chanting in a unique mournful melody to make the Hebrew words come alive to the listener. Almost 600 years later, the Second Temple of Jerusalem, rebuilt by the returnees from Babylonian exile, was again destroyed, this time by the Romans, again on the 9th of Av in the year 70 CE.