Dictionary Article

Profane or contemptuous speech or writing about (or action toward) God. In a general sense, “blasphemy” can refer to any slander, including any word or action that insults or devalues another being. In Greek literature the term was used for insulting or deriding living or dead persons, but it was extended to cover the gods as well, including both doubting the power of and mocking the nature of a god.

In the OT, “blasphemy” always means to insult God, either by attacking him directly or mocking him indirectly. Either way the glory and honor of God are lessened, so blasphemy is the opposite of praise. An Israelite might directly insult the “Name” by cursing God (Lv 24:10-16) or deliberately disobey God’s law (Nm 15:30). Either of those blasphemies was punishable by death, as was idolatry, the ultimate blasphemy (Is 66:3). It was thought that Gentiles, who had never experienced the power and majesty of the Lord, were the most likely blasphemers. Thus the king of Assyria blasphemed in equating the Lord with the gods of the nations he had already conquered (2 Kgs 19:4-6, 22). For his arrogance the king was doomed by the word of the prophet Isaiah. God was also mocked when Israel was exiled (Is 52:5), when Edom derided the desolate “mountains of Israel” (Ez 35:12, KJB), and when the enemy scoffed that God had not protected Jerusalem (Ps 74:18; 1 Macc 2:6).

In the NT, blasphemy takes on the wider Greek meaning, for it includes slandering a human being (Mt 15:19; see also Rom 3:8; 1 Cor 10:30; Eph 4:31; Ti 3:2), as well as God. It even includes mocking angelic or demonic powers, which is just as wrong as mocking any other being (2 Pt 2:10-12, Jude 1:8-10). In other words, slander, derision, and mocking of any kind are totally condemned in the NT.

The most common form of blasphemy in the NT is blasphemy against God. One might insult God directly (Rv 13:6; 16:9), mock his word (Ti 2:5), or reject his revelation and its bearer (Acts 6:11). Jesus was accused of blasphemy when he claimed to have a prerogative belonging to God—the power to forgive sins (Mk 2:7). John 10:33-36 reports an attempt to stone Jesus; his accusers said to him, “You, being a man, make yourself God” (v 33). Jesus was condemned by the highest Jewish court, the Sanhedrin, on the charge of blasphemy, because he claimed to be the Son of Man (the Messiah) but in their view had given no evidence that he was such an exalted personage, thus appearing to mock the Messiah and, by extension, to mock God himself (Mk 14:64).

Naturally the early Christians viewed Jesus’ trial from another perspective: the guards insulting Jesus (Lk 22:64-65) and the crowds and two dying robbers mocking him on the cross (Mk 15:29-32) were the real blasphemers. Observing how their Lord had been treated, the church was prepared to accept insult as their own lot, both personally (1 Cor 4:13; 1 Tm 1:13; Rv 2:9) and as a response to their message (Acts 13:45; 18:6). On the other hand, the church recognized that even Christians could blaspheme by giving way under persecution (26:11), by teaching false doctrine (2 Pt 2:2), or by behaving in an unbecoming fashion, which would bring others to think less of Christ (Rom 2:24; Ti 2:5).

The Bible makes clear that blasphemy is forgivable (Mt 12:32; Mk 3:28-29), but if a person will not repent, the only remedy is to turn him or her over to Satan to be taught the lesson (1 Tm 1:20).

Blasphemy against the Holy Spirit

This is a sin mentioned only in Mark 3:28-29 and its parallels, Luke 12:10 and Matthew 12:31. The context in Mark portrays unbelievers reacting to Jesus’ sudden popularity and startling power in two ways: (1) his family considered him insane and tried to take him home; and (2) the religious leaders, who had already proclaimed him a blasphemer (Mk 2:1-12), attributed his success to demon-possession. Matthew adds that the religious leaders were Pharisees upset by a particular healing. (Luke includes the saying in a totally different context, one of confessing Christ.) Jesus, pointing out that the charge of demon-possession was illogical, also stated strongly that blasphemy against the Holy Spirit can never be forgiven. Jesus was saying that to slander the Holy Spirit is worse even than insulting or blaspheming the Son of Man or God himself (a crime punishable by death in the OT; see Lv 24:16). Yet Jesus said that those sins are forgivable. Many Jews believed that death forgave all sins, so when Jesus called blasphemy against the Holy Spirit “an eternal sin,” he was making it serious indeed.

The religious leaders to whom Jesus spoke had seen clear, public, and compelling evidence of the good hand of God. By calling that power evil or demonic, they were wickedly and consciously rejecting God, his power, and his saving grace. That was willful and high-handed sin by those who had seen the truth but rejected it and slandered it to others. Thus, the “unforgivable sin” is not some serious moral failure nor persistence in a particular sin nor even insulting or rejecting Jesus in blindness or a fit of rebellion. It is conscious rejection of the “good power of God.” It represents a perversion of the mind in which God and Satan are willfully confused, a free choice of evil rather than good.

How can this sin be unforgivable if God is always willing to forgive? Because it has gone beyond the possibility of recovery on the sinner’s part and because God respects the freedom of persons. It is unrepentable because the person, having refused so stubbornly to repent, finally becomes unable to repent; evidence is in, and such a one will still reject the truth while knowing it to be true.

From the definition it is clear that anyone who believes he or she has committed “the unforgivable sin” could not have done so; a troubled conscience and that kind of sin could never coexist. The fact that a person feels remorse proves that blasphemy against the Holy Spirit has not yet been committed. On the other hand, Jesus’ teaching about it warns all who know the truth of God not to reject that truth or to abandon their faith.

Tyndale Open Bible Dictionary