הֵן־אַתֶּ֣ם מֵאַ֔יִן וּפָעָלְכֶ֖ם מֵאָ֑פַע תּוֹעֵבָ֖ה יִבְחַ֥ר בָּכֶֽם׃
Behold, ye are nothing, And your work a thing of nought; An abomination is he that chooseth you.
Rashi on Isaiah
Behold you are of naught and how will your words be fulfilled.
Rashi on Isaiah
and your deed is one of shouting Heb. מֵאָפַע. You shout and raise your voice only to mislead the people with lies.