Greater Israel

Greater Israel (; "Eretz Yisrael Hashlema") is an expression, with several different biblical and political meanings over time. It is often used, in an irredentist fashion, to refer to the historic or desired borders of Israel.
Currently, the most common definition of the land encompassed by the term is the territory of the State of Israel together with the Palestinian territories. An earlier definition, favored by Revisionist Zionism, included the territory of the former Emirate of Transjordan. 
History.
Promised Land.
The Bible contains three geographical definitions of the Land of Israel. The first, found in , seems to define the land that was given to all of the children of Abraham, including Ishmael, Zimran, Jokshan, Midian, etc. It describes a large territory, "from the brook of Egypt to the Euphrates".
The other definitions are found in the Book of Deuteronomy, , , the Book of Numbers, , and the Book of Ezekiel, . The definition in Numbers and Ezekiel refers to the land that was divided between the original Twelve tribes of Israel after they were delivered from Egypt, and finally, the borders defined in the book of Deuteronomy are those that will be given to the children of Israel slowly throughout the years, & ).
During British Mandate for Palestine.
Early Revisionist Zionist groups such as Betar and Irgun Zvai-Leumi regarded the territory of the Mandate for Palestine, including Transjordan, as Greater Israel.
In 1937, the Peel Commission recommended partition of Mandatory Palestine. In a letter to his son later that year, David Ben-Gurion stated that partition would be acceptable but as a first step. Ben-Gurion wrote that 
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In politics.
The Knesset Land of Israel Caucus, one of the largest lobby groups in the Knesset, has its main goal to strengthen Israel's hold on the West Bank.