Moral and sexual sanity has as its ultimate goal that we experience the fullness of God's life - and that we stay on a path that will bless and keep us safe. The father reminds his son of these things as he closes his teaching time with him.
The sexually and morally insane will not listen to instruction. They will walk into things that will eventually kill them because they will not listen to those who seek to teach them God's way in life. I know that some roll their eyes when I reiterate this, but to be sexually promiscuous in our day is to roll the dice as to your health in the future. Our world is unfortunately a cesspool of sexually transmitted diseases. The one sure way to be safe in regard to these infections is to abstain from sexual activity before marriage, and then be sexually pure and faithful in marriage. Anything other than these two choices will place us in aposition of danger when it comes to getting a sexually transmitted disease. Not listening to this kind of advice and teaching will put us as risk of dying because we lack instruction, or rebel against it. One of the very real problems that we have in this area is the fact that a large number of parents do not take the time to instruct their children with God's Word in these areas. But to leave such instruction to the public - or private schools is an abdication of our biblical responsibility as fathers! Dad, are you really willing to leave the moral instruction of your children in the hands of the world system - that is steadily opposing the morals and principles of Scripture? It is our responsibility to teach our children the truth and the way of God - and that includes their sexuality and how they interact with the opposite sex.
The second thing the father has to say to his son is that there will also be some who will go astray from the teaching and instruction of the Lord because they are fools. We read that some will go astray due to the "greatness" of their folly. It is not that they are in danger of being fools - it is that they are grand fools! In the West some speak of the Playboy lifestle drawing reference to empire of immorality that has thrived under the leadership of Hugh Hefner and his family. This man and his daughter lead a company of fools into all kinds of immorality, disease, and destruction because of how they urge men and women to abandon moral sanity and live for their unbridled sexual desires. The idea here is to cause someone to go astray, to err, to wander, to make a mistake - and to do so under the deception of arguments that are contrary to the Law of God. That is what the father desires to deliver his son from with all this teaching. He is presenting the truth to his son about his - and other's sexuality. He wants him to know that this is a gift from God - but that this gift is to be preserved and guarded until he can give it to his wife for a lifetime. Anything other than this is a lie - it is THE lie - and it will draw his son away - deceiving him and bringing him into an errant lifestyle, an errant sexuality, and a way of walking that will eventually bind him hand and foot and keep him from following the Lord with all his heart.
Dear brothers and sisters, this is why we need to instruct our sons and daughters with the truth - with the Word of God. Because to do anything less - is to leave our children completely unprotected and liable to an attack from the enemy that will devastate them, their marriages, and many generations that will unfortunately follow in their footsteps - just like ours has since the 1960's when free love was advocated. Unfortunately for us we are learning the hard way that their "free love" was anything but free. It has cost us for 4-5 generations - paying the same price we were warned it would make us pay by a father who tried to instruct his son thousands of years ago. May we see these things - may we heed these things - and may God give us grace to teach our current generation the way of moral and sexual sanity. May we return to the Word - to the Lord - and to a life lived not forour unbridled lusts - but for His glory and an honorable sexuality.