In order to explain this sin fully, a look at the general context of the statement is critical. Matthew’s account offers the most detail concerning the setting in which Jesus’ statement was made. In Matthew 12:22, the text indicates that a certain man who was demon-possessed was brought to Jesus to be healed. As was His common practice, Jesus cast out the unclean spirit, and healed the man of his blindness and inability to speak. After seeing this display of power, the multitudes that followed Jesus asked, “Could this be the Son of David?” (12:23). Upon hearing this remark, the Pharisees, wanting to discredit the source from which Jesus received His power, declared that Jesus was casting out demons by “Beelzebub, the ruler of demons.” Jesus proceeded to explain that a kingdom divided against itself could not stand, and if He were casting out demons by the power of demons, then He would be defeating Himself. It was after this accusation by the Pharisees, and Jesus’ defense of His actions, that Christ commented concerning the blasphemy against the Spirit. In fact, the text of Mark clearly states that Jesus made the comment about the blasphemy against the Spirit “because they said, ‘He has an unclean spirit.’ ”
Another critical piece of information needed to clarify Jesus’ statement is the definition of blasphemy. Wayne Jackson wrote: “Blasphemy is an anglicized form of the Greek term blasphemia, which scholars believe probably derives from two roots, blapto, to injure, and pheme, to speak. The word would thus suggest injurious speech” (2000). Bernard Franklin, in his article concerning blasphemy against the Spirit, suggested: