Apparently, the only thing Justin Bieber likes more than getting high while driving expensive cars is crashing NFL bible study sessions. The Biebs hit up the Pittsburgh Steelers' bible study group Saturday night for reasons that are still unclear. The “Baby” singer hasn't commented on the holy visit, but the Steelers were quite excited. Quarterback Bruce Gradkowski, linebacker Arthur Moats and defensive end Cameron Heyward all tweeted out photos with Bieber. "Didn't know he was a steelers fan, but welcome to steelernation," tweeted Heyward.