King James Version (KJV)
They speak vanity every one with his neighbour: with flattering lips and with a double heart do they speak.
Modern English
Everyone utters lies to his neighbor; with flattering lips and a double heart they speak.
Hebrew
שָׁ֣וְא ׀ יְדַבֵּ֣ר אִ֣ישׁ אֶת רֵעֵ֑הוּ שְׂפַ֥ת חֲ֝לָק֗וֹת בְּלֵ֣ב וָלֵ֣ב יְדַבֵּֽרוּ׃
shavʾ ׀ ydaber ʾiysh ʾet reʿehv shpat ḥalaqvot bleb valeb ydaberv