כָּל־חֹשֶׁךְ֮ טָמ֪וּן לִצְפּ֫וּנָ֥יו תְּ֭אָכְלֵהוּ אֵ֣שׁ לֹֽא־נֻפָּ֑ח יֵ֖רַע שָׂרִ֣יד בְּאָהֳלֽוֹ׃
All darkness is laid up for his treasures; A fire not blown by man shall consume him; It shall go ill with him that is left in his tent.
Read kabbalistic (mystical) interpretation of Job 20:26: and classical mystical sources.