King James Version (KJV)
They have sharpened their tongues like a serpent; adders' poison is under their lips. Selah.
Modern English
They make their tongue sharp as a serpent's, and under their lips is the venom of asps. Selah
Hebrew
שָׁנֲנ֥וּ לְשׁוֹנָ֗ם כְּ֫מוֹ נָחָ֥שׁ חֲמַ֥ת עַכְשׁ֑וּב תַּ֝֗חַת שְׂפָתֵ֥ימוֹ סֶֽלָה׃
shananv lshvonam kmvo naḥash ḥamat ʿakshvb taḥat shpateymvo selah