Proverbs 10:14 Kabbalah

חֲכָמִ֥ים יִצְפְּנוּ־דָ֑עַת וּפִֽי־אֱ֝וִיל מְחִתָּ֥ה קְרֹבָֽה׃

Wise men lay up knowledge; but the mouth of the foolish is an imminent ruin.

Read kabbalistic (mystical) interpretation of Proverbs 10:14: and classical mystical sources.