In this Support Team Study, The Four Fasts of Zechariah, Nehemia Gordon explains that the rabbinical fast of Tisha B'av (the 9th of Av), commemorates the destruction of the First and Second Temples in 586 BCE and 70 CE. The prophet Zechariah mentions this fast along with three other annual fasts. In this special in-depth Support Team Study, Dr. Gordon talks about whether we should be observing these four fasts in accordance with the prophet's teaching today.