The Promised Land.
God promised to give Abraham's seed the land from the river in Egypt, to the river Euphrates. The Promised Land was fully under the control of the Israelites, only under the reigns of King David and Solomon.
1 Kings 4:20-21 (NASB)
20 "Judah and Israel were as numerous as the sand that is on the
seashore in abundance; they were eating and drinking and rejoicing.
21 Now Solomon ruled over all the kingdoms from the River to the land
of the Philistines and to the border of Egypt; they brought tribute
and served Solomon all the days of his life."
Genesis 15:18 (NASB)
18 "On that day the Lord made a covenant with Abram, saying,“To your
descendants I have given this land, From the river of Egypt as far as
the great river, the river Euphrates."
Exodus 23:31 (NASB)
31" I will fix your boundary from the Red Sea to the sea of the
Philistines, and from the wilderness to the River Euphrates; for I
will deliver the inhabitants of the land into your hand, and you will
drive them out before you."
Deuteronomy 1:7-8 (NASB)
7 "Turn and set your journey, and go to the hill country of the
Amorites, and to all their neighbors in the Arabah, in the hill
country and in the lowland and in the [a]Negev and by the seacoast,
the land of the Canaanites, and Lebanon, as far as the great river,
the river Euphrates. 8 See, I have placed the land before you; go in
and possess the land which the Lord swore to give to your fathers, to
Abraham, to Isaac, and to Jacob, to them and their [b]descendants