Editor's note: This piece was co-authored by the author's daughter, Kristin Carey. If you showed up at an Ash Wednesday service last week, chances are you heard the word “repentance” quite a few times ...

In these weeks leading up to Rosh Hashanah and Yom Kippur, it seems that the need to understand what repentance is and why it matters is more urgent than ever, writes the author of “Repentance: The ...