Parallel
Ecclesiastes 10:20
Westminster Leningrad Codex · Berean Standard Bible
גַּ֣ם בְּמַדָּֽעֲךָ֗ מֶ֚לֶךְ אַל־ תְּקַלֵּ֔ל וּבְחַדְרֵי֙ מִשְׁכָּ֣בְךָ֔ אַל־ תְּקַלֵּ֖ל עָשִׁ֑יר כִּ֣י ע֤וֹף הַשָּׁמַ֙יִם֙ יוֹלִ֣יךְ אֶת־ הַקּ֔וֹל וּבַ֥עַל הַכְּנָפַיִם יַגֵּ֥יד דָּבָֽר׃
Do not curse the king even in your thoughts, or curse the rich even in your bedroom, for a bird of the air may carry your words, and a winged creature may report your speech.