7 ¶ Wisdom is too high for a fool: he openeth not his mouth in the gate. 8 He that deviseth to do evil shall be called a mischievous person. 9 The thought of foolishness is sin: and the scorner is an abomination to men.
The fool has nothing to say, particularly in the place of judgment, which I’ve shown in previous Proverbs was the gate. In fact, “the gate” or gates is a place of judgment.
Deuteronomy 16:18 Judges and officers shalt thou make thee in all thy gates, which the LORD thy God giveth thee, throughout thy tribes: and they shall judge the people with just judgment.
2Samuel 15:2 And Absalom rose up early, and stood beside the way of the gate: and it was so, that when any man that had a controversy came to the king for judgment, then Absalom called unto him, and said, Of what city art thou? And he said, Thy servant is of one of the tribes of Israel.
Amos 5:15 Hate the evil, and love the good, and establish judgment in the gate: it may be that the LORD God of hosts will be gracious unto the remnant of Joseph.
Zechariah 8:16 These are the things that ye shall do; Speak ye every man the truth to his neighbour; execute the judgment of truth and peace in your gates:
This should give you a heads up for what this verse means in Matthew;
Matthew 16:18 And I say also unto thee, That thou art Peter, and upon this rock I will build my church; and the gates of hell shall not prevail against it.
The very thought of foolishness is sin and the evil person shall be called mischeivious. It is a statement on our world today that these words have been downgraded to mean so very little. We’ve already discussed previously what a scorner is and in these verses he is also shown to be a fool. He is proud and even haughty and is someone who deals in proud wrath (Proverbs 21:24). And when he leaves, contention goes with him (Proverbs 22:10). He will not hear rebuke and can’t be corrected (Proverbs 13:1).