NET
18 They called out loudly in the Judahite dialect to the people of Jerusalem who were on the wall, trying to scare and terrify them so they could seize the city.
Darby
18 And they cried with a loud voice in the Jewish [language] to the people of Jerusalem that were on the wall, to frighten them and to trouble them; that they might take the city.
KJV
18 Then they cried with a loud voice in the Jews' speech unto the people of Jerusalem that [were] on the wall, to affright them, and to trouble them; that they might take the city.