The Land Covenant guarantees the Jews permanent ownership of the land in the Middle East, from the river Nile to the river Euphrates. The verses which express such a notion most explicitly are derived from Genesis chapter 15:
In the same day the LORD made a covenant with Abram, saying, Unto thy seed have I given this land,
from the river of Egypt unto the great river, the river Euphrates:
The Kenites, and the Kenizzites, and the Kadmonites, And the Hittites, and the Perizzites, and the Rephaims,
And the Amorites, and the Canaanites, and the Girgashites, and the Jebusites. (Genesis 15:18-21)
It is a historical fact that this promise has never come to pass. Even in the glorious days of King David and King Solomon the Jews were not in possession of the entire land extending from the river Nile to the river Euphrates. Currently, Israel occupies less than one tenth of one percent of the aforementioned area whereas all the rest belongs to the Arabic nations. Hence, a number of Messianic Jews and Christians argue that the Land Covenant will be fulfilled after Christ’s Second Coming when he will physically rule the world from Jerusalem for a literal 1000 years.