What is the Nation of Israel to her God?

Question

For Zion's sake I will not keep silent,
for Jerusalem's sake I will not remain quiet,
till her righteousness shines out like the dawn,
her salvation like a blazing torch.
The nations will see your righteousness,
and all kings your glory;
you will be called by a new name
that the mouth of the LORD will bestow.
You will be a crown of splendor in the Lord’s hand,
a royal diadem in the hand of your God.
No longer will they call you Deserted,
or name your land Desolate.
But you will be called Hephzibah,
and your land Beulah;
for the LORD will take delight in you,
and your land will be married.
As a young man marries a maiden,
so will your sons marry you;
as a bridegroom rejoices over his bride,
so will your God rejoice over you.
I have posted watchmen on your walls, O Jerusalem;
they will never be silent day or night.
You who call on the LORD,
give yourselves no rest,
and give him no rest till he establishes Jerusalem
and makes her the praise of the earth.
The LORD has sworn by his right hand
and by his mighty arm:
"Never again will I give your grain
as food for your enemies,
and never again will foreigners drink the new wine
for which you have toiled;
but those who harvest it will eat it
and praise the LORD,
and those who gather the grapes will drink it
in the courts of my sanctuary."
Pass through, pass through the gates!
Prepare the way for the people.
Build up, build up the highway!
Remove the stones.
Raise a banner for the nations.
The LORD has made proclamation
to the ends of the earth:
"Say to the Daughter of Zion,
'See, your Savior comes!
See, his reward is with him,
and his recompense accompanies him.'"
They will be called the Holy People,
the Redeemed of the LORD;
and you will be called Sought After,
the City No Longer Abandoned.

Answer 1

Despite it's falling aways from God, Israel is loved by God and He is clear that anyone who curses Israel will be cursed and those who bless her will be blessed.
He punishes them as a parent would a disobedient child but he has really not abandoned them. All other nations believe that God has, but He has not.