Jeremiah 9:5

And they will deceive every one his neighbour, and will not speak the truth: they have taught their tongue to speak lies, {and} weary themselves to commit iniquity. {deceive: or, mock}

Everyone will deceive their neighbors, and will not speak the truth. They have taught their tongue to speak lies. They weary themselves commiting iniquity.

שִׁבְתְּךָ֖ בְּת֣וֹךְ מִרְמָ֑ה בְּמִרְמָ֛ה מֵאֲנ֥וּ דַֽעַת־אוֹתִ֖י נְאֻם־יְהוָֽה׃

shibtka btvok mirmah bmirmah meʾanv daʿat-ʾvotiy nʾum-yhvah