Does God judge adulterers and immoral people even though marriage is honorable?
Yes. Marriage is honorable in all, and the marriage bed is undefiled, but the other side is also true: whoremongers are immoral, and adulterers God will judge. He will not wink at it; they will not get away with it and will face it someday.
Les explains that marriage is honorable in all and the marriage bed is undefiled, but that does not mean God ignores sexual sin. The other side of the coin is that whoremongers are the immoral people, and adulterers God will judge. God's not going to wink at it; they're not going to get away with it, and they're going to face up with it some day. The great white throne is waiting for the lost, and they're going to come up before God with all this on their record. Paul then comes back to I Corinthians chapter 7, saying it is good for a man not to get involved, referring to the sexual instincts, to avoid fornication or falling into immoral activity. Let every man have his own wife and every woman her own husband. That is not the sole reason for getting married, but it does have that redeeming effect: having one's spouse helps avoid the temptation to go out and be promiscuous. In Corinth, every night a thousand prostitutes were plying the streets, a constant temptation for a young man, so Paul says rather than be tempted with that, have your own wife.
Marriage is honourable in all, and the bed undefiled: but whoremongers and adulterers God will judge.