Definition of BLASPHEMY
Question: What exactly is blasphemy in the Bible? How does one do it?
Answer: First, let us take a look at the primary verses in the Bible that discusses this subject, "every sin and blasphemy shall be forgiven to men except the blasphemy against the Holy Spirit . . . but whoever speaks against the Holy Spirit, it shall not . . . " (Matthew 12:31 - 32).
The English word blasphemy is translated in the Bible from the Greek word blasphemia (Strong's Concordance #G988). It means to vilify, speak evil of, or rail against a person. Webster's Dictionary defines the word as meaning to insult, show contempt of or not revere God sufficiently. The word can be applied to a person who claims some or all of God's attributes. The word profane, a synonym, is defined as abusing or treating with contempt or disdains that which is sacred.
The above shows that blasphemy is not done by accident. It is done when one has the knowledge of the person, object, or idea that is being discussed. This was the initial charge against Jesus that condemned him to die (Matthew 26:63 - 66).
The Bible makes a distinction between what it means to commit this act against the Son of Man (Jesus) versus the Holy Spirit. This, however, begs the question as to why there is a distinction. Why are sins against Jesus forgiven but not those against the Holy Spirit? Does this mean that God's Holy Spirit, given upon repentance and baptism, is somehow GREATER than the Savior of mankind who made the gift possible?
People, out of their lack of full knowledge and understanding, may wrongly commit blasphemy against Jesus and still receive forgiveness. For example, many people living at the time of Jesus - who saw his miracles and heard him speak - concluded that he was from God. However, they also blasphemed because they denied and rejected He was God's son and the Messiah. Yet, because of their ignorance, this sin (upon repentance) will be forgiven.
In fact, a person's rejection of Jesus and his message can sometimes be due to God himself hardening their hearts. Why would God do such a thing? Jesus gives us the answer.