Wife swapping is not okay even if the partners agree to do it. It is a sin. Wife swapping is the perverted practice where married couples get together and “exchange wives” in order to have sexual intercourse with them. This is adultery.
The Bible defines what marriage is and it also states where the sexual union is to be held; namely, within the marriage covenant. The Bible tells us that a husband and wife are to remain faithful to each other. Wife swapping is a sinful and adulterous practice forbidden in scripture.
Swinging, wife swapping and threesomes is a sin called adultery, and is never acceptable to God. It doesn’t matter if you, your spouse, and the other couple all consent — God doesn’t consent. The Seventh Commandment is short and to the point:
Exodus 20:14, “You shall not commit adultery.”
Jesus raises the bar set in the Old Testament:
Matthew 5:27-28, “You have heard that it was said, ‘You shall not commit adultery.’ But I say to you that everyone who looks at a woman with lustful intent has already committed adultery with her in his heart.”
A person might claim, “It’s not adultery if my spouse knows about it and approves.” However, the definition of adultery makes no such distinction and never has throughout human history.
Voluntary sexual intercourse between a married person and someone other than his or her lawful spouse is adultery.
God’s will is that sex should be reserved exclusively for a husband and a wife. So, while there aren’t many limits on what you and your wife can do together, you can’t bring someone else into your sexual relationship. Neither spouse can give the other spouse permission to commit adultery — adultery isn’t just a sin against your spouse, it’s a sin against God.
Permission from your spouse doesn’t make adultery acceptable to God. It is never acceptable to have sex outside of your marriage. See also: Proverbs 5, “be intoxicated always in her love”, Hebrews 13:4, and Proverbs 7.
If your marriage is happy, swinging won’t strengthen it; if your marriage is unhappy, wife swapping won’t fix any of the underlying problems. We strongly exhort every married couple to keep their sex life exclusive to themselves. This is what God commands through the Bible, and worldly experience says the same thing.
