By Darrel Rowland It”s hard to say which was the more unusual sight at this year”s North American Christian Convention: the heavy-metal guitarist with waist-length dreadlocks and arms covered by tattoos as a featured speaker or the video of venerable Ben Merold, now 88, playing the Godfather. Or was it the appearance of a beardless Duck Dynasty star? Perhaps the oversized beach balls and foam flying discs tossed into the crowd before several of the services? Or possibly even the NACC president admitting that his primary prayer to God was “not to screw up the work of his Holy Spirit”