Pride goes before a fall . . . into sexual sin. This entire chapter is a father's advice and counsel to his son. The issue which is being discussed is that of sexual immorality - with an emphasis on the adulterous and immoral woman. Toward the end of his instruction Solomon tells his sons that there will come a day when their adultery will be brought to light by God. When that day happens, we are told that the one who followed after these sins will not be truly repentant. Instead he will speak of how he hated all that teaching about adultery being sin. He ignored all that garbage that the Bible had to say about morals. He will say it even as his life is in shambled about him - due to his sexual immorality.
The two words used in this verse are instructive to us about what our attitude becomes toward God's call for holy living. The first word is "sane" which means to hate. The word means to loathe, dislike, and even despise another, their actions or their words. Here the sexually immoral man hates the instruction of the Bible on sex. He also "spurns" reproof. The word for "spurn" is the Hebrew word "na'as" which means to revile, reject, and scorn. This word has the idea that the one doing this is very unhappy and angry as they do this. Thus when reproof comes their way - they can spew angry and unhappy words as they hate what they are hearing. I've had the unfortunate responsibility to confront people about sexual immorality - and have faced the vitriol that comes toward those who dare to speak against the spirit of this age, which fully embraces a full and free expression of sexuality without any limits.
A quick look at the Biblical record of people who were given over to sexual immorality shows that they were very rebellious to the message of God's Word. Whether that was an appeal to the Law of God - or the appeal of one of God's prophets, they hated when they were rebuked. Just like this passage says, they spurned God's reproof and would not listen to the teachers God sent them. Sexual sin blinds us to the truth - and the further we go into it - the worse that blindness becomes. All that is visible is the desire for more that knaws at those who reject the morality God calls us to follow.
God warns us in Romans chapter 1 that ignoring His commands concerning sexuality, (which are simply this - sex is only acceptable in a marriage relationship between a man and a woman - all other sexual activity - heterosexual immorality, monosexuality, or homosexuality are sin) ignoring them is sin. When we reject this - God gives us over to our sin - first in more bondage to fornication heterosexually - and eventually to homosexuality, as a sign that we are further being given over to our sin. What is a little frightening is that by the end of Romans - we have a society that has rejected pretty much all that God commands - and heartily approve of others who live as they do - rejecting God's way. There is a steady move away from God, away from listening to Him and His Word, and away from any kind of teachable mindset.
A wise man sees far enough into a sexually immoral lifestyle to know that it will hurt him in many ways. We've seen from prior verses that health and relationships are destroyed by it. Now we see that one's relationship to truth is greatly harmed by it - as well as their relationship with the God Who gave His Word to us. Some think they can tinker with immorality without consequence to their relationship with God. After reading and looking at today's proverb - the wise man knows better, and instead submits himself to God's Word. The stakes are just too high to ignore what God says here.