Is the marriage bed undefiled in the Bible and does God judge adulterers?

Les explains that marriage is honorable in all and the marriage bed is undefiled, but the other side of the coin is that whoremongers are the immoral people, and adulterers God will judge. He emphasizes that God is not going to wink at it; they will not get away with it, and they will face it someday. The great white throne is waiting for the lost, and they will come before God with all this on their record. Les then returns to I Corinthians chapter 7, where Paul says it is good for a man not to get involved—referring to sexual instincts, not touching a woman—but rather to avoid fornication or falling into immoral activity. Paul says let every man have his own wife and every woman her own husband. Les cautions that this is not the sole reason for marriage, but it does have a redeeming effect: having one's spouse helps prevent temptation to go out into the world and be promiscuous. In Corinth, a thousand prostitutes were plying the streets each night, a constant temptation for a young man, so Paul says rather than be tempted, have your own wife. Verse 3 then says, Let the husband render unto the wife.