גַּ֭ם מִתְרַפֶּ֣ה בִמְלַאכְתּ֑וֹ אָ֥ח ה֝֗וּא לְבַ֣עַל מַשְׁחִֽית׃
Even one that is slack in his work Is brother to him that is a destroyer. .
Rashi on Proverbs
Even one who is slack in his work If he is a Torah scholar who separated himself from the Torah.