📖 Biblical Definition
To blaspheme is to speak against God in a way that defames His name, denies His nature, or attributes His works to evil. In the Old Testament, blasphemy against the name of the LORD carried the death penalty: "Whoever blasphemes the name of the LORD shall surely be put to death" (Leviticus 24:16). The charge brought against Jesus was blasphemy -- because He claimed to be God, which was either the supreme truth or the supreme blasphemy (Mark 14:61-64). Christ warned of one unforgivable sin: blasphemy against the Holy Spirit, which is the willful, persistent attribution of the Spirit's work to Satan (Matthew 12:31-32). Blasphemy is not merely profanity; it is the verbal assault on God's holy character.
📜 Webster 1828 Definition
To speak of the Supreme Being in terms of impious irreverence; to revile or speak reproachfully of God.
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BLASPHEME', v.t. [Gr. blasphemeo.] 1. To speak of the Supreme Being in terms of impious irreverence; to revile or speak reproachfully of God, or the Holy Spirit. 2. To speak evil of; to utter abuse or calumny against; to speak reproachfully of. Webster maintained the gravity of this term as primarily an offense against God, not merely offensive speech in general.
📖 Key Scripture
• Leviticus 24:16 — "Whoever blasphemes the name of the LORD shall surely be put to death. All the congregation shall stone him."
• Matthew 12:31-32 — "Therefore I tell you, every sin and blasphemy will be forgiven people, but the blasphemy against the Spirit will not be forgiven."
• Mark 14:61-64 — "Again the high priest asked Him... Jesus said, 'I am'... And they all condemned Him as deserving death."
• Revelation 13:6 — "It opened its mouth to utter blasphemies against God, blaspheming His name and His dwelling."
• Romans 2:24 — "For, as it is written, 'The name of God is blasphemed among the Gentiles because of you.'"
⚠️ Modern Corruption
Blasphemy has been trivialized into a relic of religious intolerance.
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Modern culture has two approaches to blasphemy, both wrong. The secular world treats blasphemy as an outdated concept -- a relic of theocratic oppression that has no place in a "free society." Entertainment routinely mocks God, Christ, and the Holy Spirit with impunity, treating irreverence as comedy. Simultaneously, the concept of "blasphemy" has been secularized: speaking against progressive orthodoxy (questioning climate narratives, gender ideology, or racial frameworks) is treated with the same moral outrage once reserved for defaming God. The result is a society that protects its idols with blasphemy laws while laughing at blasphemy against the living God. Scripture is clear: God will not be mocked, and those who revile His name will answer for it.
Usage
• "The Pharisees accused Jesus of blasphemy for claiming equality with God -- but it is only blasphemy if the claim is false."
• "Using God's name as a casual expletive is blasphemy, whether the culture recognizes it or not."
• "Attributing the regenerating work of the Holy Spirit to psychological manipulation approaches the very blasphemy Christ warned is unforgivable."