They say one thing and always do another. Jews are liars, it's a part of their law.
Talmud aka Written Oral Torah/Jewish Law Excerpts:
“Jews always have to try to deceive Non-Jews.” (Zohar I, 168ª)
Every Jew is allowed to use lies and perjury to bring a Non-Jew to ruin.” (Babha Kama 113ª).
Tosefta. Aboda Zara B, 5: “If a goy kills a goy or a Jew, he is responsible; but if a Jew kills a goy, he is NOT responsible.
"Kill the Goyim (non-Jews) by any means possible."-Jewish Talmud, Choshen Ha'mishpat 425:50