You are in error.
Joshua 21:43 And the LORD gave unto Israel all the land which he sware to give unto their fathers; and they possessed it, and dwelt therein.
Joshua 21:45 There failed not ought of any good thing which the LORD had spoken unto the house of Israel; all came to pass.
And,
Genesis 15:18 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.
1 Kings 4:21 And Solomon reigned over all kingdoms from the river unto the land of the Philistines, and unto the border of Egypt: they brought presents, and served Solomon all the days of his life.
The "river" is the Euphrates.
Now,
@JD731, I urge you to stop saying that God has not kept all of the promises that He made to Israel.
You were not careful in your reading. Here is what the Abahamic covenant says about the land grant.
Ge 13:14 And the LORD said unto Abram, after that Lot was separated from him, Lift up now thine eyes, and look from the place where thou art northward, and southward, and eastward, and westward:
15 For all the land which thou seest, to thee will I give it,
and to thy seed for ever.
16 And I will make thy seed as the dust of the earth: so that if a man can number the dust of the earth, [then] shall thy seed also be numbered.
17 Arise, walk through the land in the length of it and in the breadth of it; for I will give it unto thee.
Ge 48:3 And Jacob said unto Joseph, God Almighty appeared unto me at Luz in the land of Canaan, and blessed me,
4 And said unto me, Behold, I will make thee fruitful, and multiply thee, and I will make of thee a multitude of people; and will give this land to thy seed after thee for an everlasting possession.
I suggest also reading the Palestinian, or land covenant, in Duet 30.
Abraham bought a burial plot to bury Sarah in the land that was given to him. He has not possessed the land yet.
!Ge 23:13 ! And he spake unto Ephron in the audience of the people of the land, saying, But if thou wilt give it, I pray thee, hear me: I will give thee money for the field; take it of me, and I will bury my dead there.
14 And Ephron answered Abraham, saying unto him,
15 My lord, hearken unto me: the land is worth four hundred shekels of silver; what is that betwixt me and thee? bury therefore thy dead.
16 And Abraham hearkened unto Ephron; and Abraham weighed to Ephron the silver, which he had named in the audience of the sons of Heth, four hundred shekels of silver, current money with the merchant.
17 And the field of Ephron, which [was] in Machpelah, which [was] before Mamre, the field, and the cave which [was] therein, and all the trees that were in the field, that were in all the borders round about, were made sure
18 Unto Abraham for a possession in the presence of the children of Heth, before all that went in at the gate of his city.
19 And after this, Abraham buried Sarah his wife in the cave of the field of Machpelah before Mamre: the same [is] Hebron in the land of Canaan.
20 And the field, and the cave that [is] therein, were made sure unto Abraham for a possession of a buryingplace by the sons of Heth.