This teaching was given from the wilderness of Israel on the 9th of Av. In the class, Ross strongly suggests that many, on this day, are focused on the wrong thing. Working through various texts in the prophets, he shows that rather than focus on the destruction of the Temples, the people of God should be focused on the causes which led to each destruction. And what about fasting? Ross makes it plain that fasting is good so long as one heeds the words of the prophets – particularly Isaiah chapter 58.
You may also like this article – Focus for the Fast.