In Hebrew, the name of a holiday isn't usually included in its greeting. So Hebrew speaking Christians would just say "Happy holiday" or khag same'akh (חג שמח).
In Hebrew you say "Shalom" for piece.
There is no Hebrew word for Father Christmas. The Christian minority in Israel is very religious, and doesn't normally observe the secular aspects of the holiday. Israelis would just use the expression "Santa Claus" if they needed to refer to this character.
The People of Israel = Am Yisra'el (עם ישראל)
in Hebrew you say kesef (כסף)
"YEES-rah-EHL"
"He mitga'agaat le Israel" (היא מתגעגעת לישראל). And don't worry about the 'he' part, in Hebrew 'he' means 'she'.
There is no Hebrew word for Santa Claus. The concept doesn't exist in Israel.
Hanukkah is a holiday, not a language. You cannot say "Merry Christmas in Hanukkah. That's like asking: "How do you say Merry Christmas in Easter" I think he means how do you say merry Christmas in Hebrew
goodbye in Hebrew "Le'Hit'Ra'Ot".
There is nothing called Israellanguage. In Israel you talk Hebrew or Arabic.
esev Yisra'el (עשב ישראל)