To communicate anything to a Goy about our religious relations would be equal to the killing of all Jews, for if the Goyim knew what we teach about them, they would kill us openly. Libbre David 37
“Jews always have to try to deceive Non-Jews.” (Zohar I, 168ª)
"Kill the Goyim (non-Jews) by any means possible."-Jewish Talmud, Choshen Ha'mishpat 425:50