From American Vision:
The sons of Issachar are referenced at a crucial point in the national life of Israel—the coronation of King David over all of Israel—as men who “understood the times” and had “knowledge of what to do” (1 Chron. 13:32). Yet Scripture does not seem to say why they are given such an honor or what exactly it means.
If you want to get into some very interesting biblical details, and even a profound insight on why Jesus was called “A wine bibber and a glutton” (Hint: Deuteronomy 21:20), check out the video on the webpage.