So, he's not committing adultery with his wife. But he is committing adultery with the porn image.
Do you think such sex is fine because his body parts are connecting with his wife's? Can you see that this defiles the marriage bed? that this sex "falls short"?
sin= miss the mark, fall short
I asked a similar question earlier which you didn't answer. When you don't answer, I assume you don't agree. ie I assume you give ANY marital sex a Hebrews 13:4 stamp of approval. Doesn't matter what fantasies are going on between the ears
I don't recall your question. There are other possibilities. Maybe I didn't read it. Maybe I did and got distracted by 'real life' and forgot about it, or any number of possibilities. It's not wise to assume bad things about people just because they don't respond to your posts.
I realize Hebrews 13:4 could be translated 'let marriage be pure and the bed undefiled'. I haven't really made up my mind which of the two translations makes more sense. I also keep in mind the actual Greek speaking audience didn't have to 'choose' between translations. They could read both senses from the text.
The KJV says,
4 Marriage is honourable in all, and the bed undefiled: but whoremongers and adulterers God will judge.
Just right now, I looked up 'de' the word translated 'but' in this passage. I know Hebrew wa can mean but or and. I suspected Greek was a bit more definitive. I also realize I am a layman looking stuff up in Greek dictionaries, and that the Strong's definition is rather limited and Vine's doesn't go into all that much detail for most words.
Vine's says,
2 Strong's Number: g1161 Greek: de
Even (Adverb, Etc.), Even As, Even So:
usually signifying "but," is sometimes used for emphasis, signifying "even," e.g., Rom 3:22; 9:30, "even the righteousness;" Phl 2:8 (RV, "yea"). This is to be distinguished from No. 1.
It seems like the author is contrasting the purity of the marriage bed versus fornicating and adultery. So I tend to side with the way the KJV and other similar translations take the verse, that this is an affirmation of the holiness of purity and undefiledness of the marriage bed.
Does that mean that anything a married couple does is without sin? If I don't see this verse as a specific warning to not let your bed get defiled, that doesn't mean I have to conclude that anything done in the marriage bed is sinless.
Bringing a prostitute to have a threesome is still adultery, even if the point of the verse is not a warning about defiling the marriage bed. Looking with lust at someone else while in the marriage bed would be sinning. I suppose someone could be violent with their spouse in the marriage bed and get excited by that. Even if their spouse wants whips and chains or whatever, I suppose that could still be sinful. I'm not a whips and chains kind of guy myself and my wife isn't either. I'm just giving that as an example.
One of the topics that has come up here in the past is if a man is looking at porn and his wife knows it, is he defiling their marriage bed? If you answer yes, then the question is whether she should withold sex from him. But that would be defrauding her spouse, and that is a bit clearer in I Corinthians 7 than this interpretation from Hebrews 13.
I've also heard of churches disciplining a man who was into porn and other sexual sin. They went to the extent of providing a place for his wife and kids to move out until he repented. Fortunately, he did.
But then there are wives married to unbelievers, and we aren't supposed to do church discipline on them. Witholding sex from an unbelieving husband just doesn't seem like something a wife should do in light of passages like I Peter 3. That doesn't mention sex, but it does indicate she should be a good wife to him.
If you think that a man's sin in porn defiles the marriage bed, though, doesn't that lead to the conclusion that the other partner should not participate. What if the husband is an idolator and the wife isn't. Does that defile her, too?
The book the Shepherd of Hermas has the 'shepherd' teaching Hermas that if one partner is in sexual sin (I assume physically) that to sleep with them before their repentance defiles the other partner. I don't recall Hebrews being quoted or referred to. But the idea is rather old. It is also rather disgusting to think of sharing a marriage bed with a partner who is sleeping around, and not very healthy either.
Still, I tend to think of the verse in Hebrews 13 this as an affirmation of the holiness of marriage and the purity of the marriage bed since it is in contrast with whoremongers and adulterers. I believe someone could bring sin into their sexual relations with their spouse, but I wouldn't go so far as to conclude that an individual's sins in their own heart defile the other spouse, especially not if the sinning person is an unbeliever. A believer in unrepentant sin could defile the whole congregation, wife included, if his sin is not dealt with.