Eze 36:24 "For I will take you from among the nations, gather you out of all countries, and bring you into your own land."
The Jews crucified our Lord Jesus because they could not believe that the Messiah could deliver them from the mighty Romans. For this great unbelief, God scattered them to the four corners of the earth. So on Pentecost, the disciples of Jesus having been filled (many baptized) with the Holy Spirit, were able to convince more than 5,000 devout Jews (from far away countries) to be baptized into the kingdom of Christ. These new converts (former devout Jews) would be effective in bringing the gospel of salvation back to the Jews at the synagogues in their adopted countries. All disciples of Jesus also preached the gospel in the synagogues.
Eze 11:16 Therefore say, 'Thus says the Lord God : "Although I have cast them far off among the Gentiles, and although I have scattered them among the countries, yet I shall be a little sanctuary for them in the countries where they have gone."
So when Jerusalem and the temple were destroyed by general Titus, the scattered Jews would be welcomed by Israeli Christians everywhere and also in the synagogues. God loved them and prepared their salvation in all these foreign nations yet many stiff-necked Jews rejected the Lord.
Eze 11:17 Therefore say, 'Thus says the Lord God: "I will gather you from the peoples, assemble you from the countries where you have been scattered, and I will give you the land of Israel."'
Because of His promise, He will bring them back again to form the new nation of Israel. So in 1948, the modern nation of Israel was born.
Deu 7:22-23 And the Lord your God will drive out those nations before you little by little; you will be unable to destroy them at once, lest the beasts of the field become too numerous for you. But the Lord your God will deliver them over to you, and will inflict defeat upon them until they are destroyed.
In the days of Joshua, God allowed the 2-3 million Israelites to possess the Promised Land bit by bit until finally Jerusalem and the Gaza strip were conquered by King David (a period of 400 years).
Aliyah - the call to form Israel
The call of 'Aliyah' since 1818 brought some Jews back to Palestine mainly caused by pogroms in Russia and later in Europe. Balfour declaration in 1918 and approved by the league of nations in1922 was to help the Israelites to form the nation of Israel in Palestine. But majority of Jews refused to go home to form the nation of Israel again because of unbelief. The pogroms in Russia and later the rest of Europe, see many Jews migrating to US instead of 'Aliyah'.
1918 - Jews 90K; Others 600K
1947 - Jews 630K; Others 1,324K
With such a small population of Jews, only a small part (mainly desert and swamp land) was given by UN to Israel in 1948, but the Lord gave them another 50% extra land after the war in 1948. In 1967 when the Jews population was over 2 million (similar to Joshua's conquest), God gave the whole Palestine back to the Israelites after the six-day war.
1967 - 2.385 millions Jews
Eze 11:21 "But as for those whose hearts follow the desire for their detestable things and their abominations, I will recompense their deeds on their own heads," says the Lord God.
Their unbelief in Yahweh, the Almighty God cause them to disobey the call to aliyah. World War 2 saw millions of Jews killed and many more suffered horribly, and this may be the start of 'Aliyah' to form the nation of Israel in 1948.