### Core Meaning & Semantic Range
The Greek word **blasphēméō**, represented by `{{G987}}`, means **to vilify; specially, to speak impiously**. It appears **39 times** across **35 unique verses** in the Bible. The term encompasses a range of hostile speech, including to defame, rail on, revile, and speak evil, with a specific focus on irreverence towards God.
### Biblical Occurrences & Contextual Analysis
In scripture, `{{G987}}` is used to describe direct opposition to God and his servants. Men under judgment are depicted as having **blasphemed** the name of God in their suffering, refusing to repent [[Revelation 16:9]]. Jesus was accused of blasphemy for claiming divine authority, such as when he said, "I am the Son of God" [[John 10:36]]. This charge was ultimately used by the high priest to condemn him [[Matthew 26:65]]. The most severe warning is reserved for one who **blasphemeth** against the Holy Ghost, an act for which there is no forgiveness [[Luke 12:10]]. The word is also used for those who **railed** on him at the crucifixion [[Mark 15:29]].
### Related Words & Concepts
Several related words help define the concept of blasphemy and its opposite:
* `{{G988}}` **blasphēmía** (vilification (especially against God)): This is the noun form of the verb. It is listed among sins that proceed from the heart [[Matthew 15:19]] and is something believers are commanded to put away [[Ephesians 4:31]].
* `{{G3679}}` **oneidízō** (to defame, i.e. rail at, chide, taunt): This term for reproach is closely linked to blasphemy. Believers who are **reproached** for the name of Christ are told they are happy, even as their persecutors **speak evil** of him [[1 Peter 4:14]].
* `{{G1392}}` **doxázō** (to render (or esteem) glorious): As the direct antonym, this describes the act of giving honor and glory. While believers may be **evil spoken of** by some, on their part God is **glorified** [[1 Peter 4:14]].
### Theological Significance
The theological weight of `{{G987}}` is significant, highlighting the gravity of speech and conduct.
* **The Unforgivable Sin:** The act of blasphemy against the Holy Spirit is uniquely identified as a sin that has no forgiveness, establishing it as an ultimate form of spiritual rebellion [[Mark 3:29]].
* **The Believer's Witness:** The behavior of God's people can cause His name to be **blasphemed**. The scriptures urge righteous conduct so that the word of God and his doctrine are not brought into disrepute ([[Titus 2:5]], [[1 Timothy 6:1]]). In contrast, poor witness leads to God's name being **blasphemed** among the Gentiles [[Romans 2:24]].
* **An Act of Rebellion:** Blasphemy is portrayed as the language of the unrepentant heart. It is the response of those who face God's judgment but refuse to repent [[Revelation 16:9]] and is characteristic of presumptuous false teachers who despise authority [[2 Peter 2:10]].
### Summary
In summary, `{{G987}}` is a critical term that moves beyond simple insult to encompass profound spiritual hostility. It defines the ultimate verbal sin against God, serves as a key accusation against Christ, and acts as a measure of a heart's rebellion. The use of **blasphēméō** throughout scripture demonstrates the deep connection between a person's words, their actions, and their ultimate standing before God.