תּוֹעֲבַ֣ת יְ֭הוָה מַחְשְׁב֣וֹת רָ֑ע וּ֝טְהֹרִ֗ים אִמְרֵי־נֹֽעַם׃
The thoughts of wickedness are an abomination to the LORD; But words of pleasantness are pure.
Read kabbalistic (mystical) interpretation of Proverbs 15:26: and classical mystical sources.