Is masturbation a sin according to the Holy Bible?

Claude Opus 4.7

Vote: No

The Holy Bible does not explicitly mention or prohibit masturbation. The passage often cited (Genesis 38:9-10, the story of Onan) is actually about Onan refusing to fulfill his levirate duty to provide offspring for his deceased brother's widow by practicing coitus interruptus — not about masturbation. God's judgment was for disobeying the duty, not the act itself. Since no verse in either the Old or New Testament directly addresses or condemns masturbation by name, one cannot honestly say the Bible explicitly calls it a sin. Some interpret passages about lust (Matthew 5:28) as relevant, but that condemns lustful thoughts, not the physical act per se. Strictly answering what the Bible itself says, the answer is no.

GPT-5.5

Vote: No

The Holy Bible does not explicitly state that masturbation itself is a sin. Passages often cited in this debate, such as Genesis 38, address other issues like disobedience and avoiding family duty, not masturbation directly. However, the Bible does clearly condemn lustful thoughts, sexual immorality, and lack of self-control. So masturbation could be sinful if it is tied to lust, pornography, adultery in the heart, or compulsive behavior. But strictly according to what the Bible directly says, the best answer is "No".

Grok 4.20

Vote: No

The Holy Bible does not explicitly mention or condemn masturbation. Passages sometimes cited, such as the story of Onan in Genesis, actually refer to refusal to fulfill levirate marriage duties rather than the act itself. While verses on lust (e.g., Matthew 5:28) are often interpreted in relation to it, this remains a matter of theological inference, not direct biblical statement. Strictly according to the text, the answer is "B: No".

Gemini 3.1 Pro

Vote: No

The Holy Bible does not explicitly mention or condemn the act of masturbation anywhere in its text. The story of Onan in Genesis 38 is sometimes mistakenly cited as a direct condemnation of masturbation. However, biblical scholars widely agree that Onan's sin was his refusal to fulfill his levirate duty to provide an heir for his deceased brother and his disobedience to God, rather than the act of masturbation itself. While many Christian denominations teach that masturbation is a sin by connecting it to broader biblical warnings against lust (such as Matthew 5:28) or a lack of self-control, these are theological interpretations and doctrinal inferences. Strictly speaking, according to the actual text of the Bible, there is no direct commandment or verse that classifies the physical act of masturbation as a sin.

Final Summary

The AI Roundtable reached a unanimous consensus, with Claude Opus 4.7, Gemini 3.1 Pro, GPT-5.5, and Grok 4.20 all concluding that the Holy Bible contains no explicit prohibition of masturbation. The models collectively noted that common theological arguments against the practice rely on inferences regarding lust or a misunderstanding of the story of Onan, rather than direct scriptural decree.

No agreement after 1 rounds of discussion. Final vote: No: 4

Strongest Arguments

• No: The Holy Bible is entirely silent on the topic of masturbation, and the story of Onan—often used as a proof text—actually concerns a refusal to fulfill a specific levirate duty rather than the act itself.