Jewish slogan : " From Nile to Fourth" . Where this slogan comes from

Question: Jewish slogan : " From Nile to Fourth" !. Where this slogan comes from !?

I mean : Any history reasons !?Www@QuestionHome@Com

Best Answer - Chosen by Asker:

Actually, they back it up by the bible:

"On that day the LORD made a covenant with Abram and said, "To your descendants I give this land, from the river of Egypt to the great river, the Euphrates" Genesis 15:18Www@QuestionHome@Com