In the worship center of a nondenominational church in Blountville, Tenn., Jason Greer told a room of about 450 that he wasn’t used to public speaking. But his rhetorical skills hardly mattered: His story — of years of drug abuse, incarceration and, now, the long road to recovery — powerfully put a human face on the opioid addiction crisis.
Even Mark Zuckerberg is starting to notice it: we're meant to live in community. But if church isn't enough, and small groups don't cut it, what is it we need? John Piper shares one distinguishing mark of friendship among believers—the one thing your Christian friendship can't exist without.