Verses 1–2
The Fool Who Separates Himself
“He who separates himself” (Proverbs 18:1) has become an enemy of every form of friendship because of his selfishness and self-interest. Everyone he should have taken into account, hinders him in satisfying “[his own] desires”. The only thing he pays attention to is what gives pleasure to himself. Therefore he doesn’t want to know of any form of wisdom, for that confronts him with a higher purpose of life.
When something is said to him about it, whether by God from His Word when that is presented to him, or by a man, when he wants to point out something to him, he “quarrels” against it. He is like the apostate Jews of whom it is written that they do not please God and are against all people (1 Thessalonians 2:15). His whole attitude shows that he belongs to those who are “worldly-minded, devoid of the Spirit” (Jude 1:19).
It should be noted that there is a separation which God asks from us in His Word. That concerns a separation from sin and people who are living in sin and from those who accept sin in others and do not distance themselves from them (2 Timothy 2:19-Ecclesiastes :; 2 Corinthians 6:14-Esther :; Hebrews 13:13; 2 John 1:7-1 Kings :).
Proverbs 18:2 is connected to Proverbs 18:1. He who quarrels against all wisdom shows that he is “a fool”, somebody who naturally “does not delight in understanding”. What he delights in is passing his opinion and in that way “revealing his own heart”. He hates understanding, but delights in telling his own foolish understanding. By what he says he reveals what is hidden in his heart. Such a person asks questions to show how smart he is (which he in any case thinks of himself) instead of desiring to be taught. He has a preformed, incorrigible opinion and wants it to be heard.
We find this fool in the days of the Lord Jesus in the religious leaders. They cannot be happy from the understanding that Christ wants to give and even quarrel against it. They only want to air their own understanding and be admired for it.