Yom Kippur ends the stretch of 10 days beginning with Rosh Hashanah that Jews call the Days of Awe. But this year, the awe is accompanied by shock, thanks to a public showdown between a rapper and a football magnate. The feud between Macklemore and Robert Kraft was instant clickbait. But in a strange way it also has the makings of a sermon, one that practically wrote itself leading up to the Day of Atonement. For Jewish people who observe the holiday, it’s a time to fast, reflect, and repent — and it has particular resonance this year for unexpected...