Genesis 15:18
On the same day the Lord made a covenant with Abram, saying; “To your descendants I have given this land from the river of Egypt to the great river, the river Euphrates.”
On the day that God made a covenant with Abraham He promised to give his descendants all the land from the river of Egypt, that is the most eastern branch of the Nile, right across to the Euphrates.
Abraham had two sons. Ishmael was his son by a servant and didn’t inherit the land but Isaac was the son with Sarah promised by God who carried on the family line and inherited the promised land.
If God promised the land to Abraham and his descendants in an “everlasting “covenant as the Bible says in Exodus chapter 17 then the land belongs to the Jews forever.
This promise is repeated in:
Genesis 17:8; 28:13, in general terms
Exodus 23:31 in specific detail
Leviticus 20:24 in general terms
Numbers 34:2-15 in specific detail
Deuteronomy 1:7-8; 4:40; 9:5-6; in general terms
Deuteronomy 11:24, in specific detail
Joshua 1:4, in specific detail
Joshua 1:13 in general terms
Therefore, the Land always belongs to the Jews because they are the descendants of Abraham through Isaac.
Genesis 15:18
On the same day the Lord made a covenant with Abram, saying; “To your descendants I have given this land from the river of Egypt to the great river, the river Euphrates.”