I think you need to define "Israel" before you do anything else.....scripture paints a grim picture of Israel's track record down through their history.
God did not choose Israel because they were better than any other people....they proved that they were not obedient to the laws of their God for a good part of the time that they had vowed to serve him, exclusively.
It was a promise made to Abraham that his descendants would become 'more numerous than the sands of the sea', and through his lineage, God would produce the promised Messiah. But time and again we see Israel fail to live up to their end of the covenant that was made upon their release from Egypt, and yet God could have terminated his covenant, since the terms depended upon their obedience to his laws. They could never hold on to true worship for long, allowing false religious practices to creep in and contaminate God's worship. He punished them and when they repented, he forgave them...and he kept on doing so even when he just wanted to destroy them....
Exodus 32:7-8, 9-10....
"Then the Lord spoke to Moses, “Go down at once, for your people, whom you brought up from the land of Egypt, have corrupted themselves. 8 They have quickly turned aside from the way which I commanded them. They have made for themselves a molten calf, and have worshiped it and have sacrificed to it and said, ‘This is your god, O Israel, who brought you up from the land of Egypt!’”. . . . .
"The Lord said to Moses, “I have seen this people, and behold, they are an obstinate people. 10 Now then let Me alone, that My anger may burn against them and that I may destroy them; and I will make of you a great nation.”
Yet God kept them in existence until his purpose in connection with them was fulfilled.....even giving them first opportunity to become rulers with Christ in his Kingdom. The majority however, succumbed to the lies told by their religious leaders and they called on Pilate to execute him, cursing themselves and their children with Christ's blood. (Matthew 27:24-25)
Even John the Baptist gave the hypocritical Pharisees a serve....
Matthew 5:7-10....
"But when he saw many of the Pharisees and Sadducees coming for baptism, he said to them, “You brood of vipers, who warned you to flee from the wrath to come? 8 Therefore bear fruit in keeping with repentance; 9 and do not suppose that you can say to yourselves, ‘We have Abraham for our father’; for I say to you that from these stones God is able to raise up children to Abraham. 10 The axe is already laid at the root of the trees; therefore every tree that does not bear good fruit is cut down and thrown into the fire." (NASB)
When they murdered God's son, the axe fell. The nation was abandoned and a new nation was chosen to replace them....
Matthew 21:23, 42-43....NASB...
"When He entered the temple, the chief priests and the elders of the people came to Him while He was teaching, and said, “By what authority are You doing these things, and who gave You this authority?”. . . . .
Jesus said to them, “Did you never read in the Scriptures,
‘The stone which the builders rejected,
This became the chief corner stone;
This came about from the Lord,
And it is marvelous in our eyes’?
43 Therefore I say to you, the kingdom of God will be taken away from you and given to a people, producing the fruit of it."
Fleshly Israel was no longer God's nation.....he chose a new one whom Paul described as "the Israel of God"....'spiritual Israel' made up of both Jewish and Gentile disciples of Jesus Christ. (Galatians 6:16)
Paul also defined what a real "Jew" was in God's eyes....
Matthew 3:7-10....
"You who boast in the Law, through your breaking the Law, do you dishonor God? 24 For “the name of God is blasphemed among the Gentiles because of you,” just as it is written. . . . .For he is not a Jew who is one outwardly, nor is circumcision that which is outward in the flesh. 29 But he is a Jew who is one inwardly; and circumcision is that which is of the heart, by the Spirit, not by the letter; and his praise is not from men, but from God."
Matthew 15:7-9 NASB.....
"You hypocrites, rightly did Isaiah prophesy of you:
8 ‘This people honors Me with their lips,
But their heart is far away from Me.
9 ‘But in vain do they worship Me,
Teaching as doctrines the precepts of men.’”
Acts 15:14....
"Simeon has related how God first concerned Himself about taking from among the Gentiles a people for His name." (NASB)
Israel was handed back to the nations to become part of the world. The nation of Israel today are blood spillers like all the rest. (Isaiah 1:15)
They have forsaken their God, and like their forefathers, have allied themselves with those whose worship they despise.
"Jewish" now just describes a person's nationality....not necessarily their religion.
Jesus said of them....
“Jerusalem, Jerusalem, who kills the prophets and stones those who are sent to her! How often I wanted to gather your children together, the way a hen gathers her chicks under her wings, and you were unwilling. 38 Behold, your house is being left to you desolate! 39 For I say to you, from now on you will not see Me until you say, ‘Blessed is He who comes in the name of the Lord!’”
(Matthew 23:37-39)
In the last 2,000 years individuals from the Jewish nation have come to Christ like the first century disciples did, but as a nation they still deny Jesus was the Christ. Whilst we wait for his return....the Jews wait in vain for him to show up at all. They will never acknowledge the one "who came in the name of the Lord".
1948 therefore has no significance or meaning.....