Within the Jewish community, Jews for Jesus is viewed as just cause for a headache. But is it possible that the group’s actual effect renders the cause harmless?One thing most Jews seem able to agree on is that Messianic and other Jesus-believing Jews make us uncomfortable—which might be the understatement of the year. a Because I wrote a book titled Why the Jews Rejected Jesus (Doubleday), I have received many e-mails from Jewish Christians wanting to argue with me or just share their own experiences. More than a few complain of having been yelled at, ostracized, even spat on by...