A heckler is someone who harasses and tries to disconcert someone with questions and challenges, or baits someone.  It implies persistent interruptive questioning of a speaker in order to confuse, embarrass, hamper or frustrate him.  In this sermon, we will learn about the Hecklers of the holy.  A “spiritual heckler” acts desperately - though perhaps not verbally - to interrupt the communicator (CONVICTION) in order to deflect the truth about their spiritual condition.