Someday everyone will know the significance of that day:

Pictured: Israel Defense Forces soldiers next to Jerusalem's Western Wall shortly after the 6-Day War (June 5-10, 1967)

Luke 21:23-24:

How dreadful it will be in those days for pregnant women and nursing mothers! There will be great distress in the land and wrath against this people. They will fall by the sword and will be taken as prisoners to all the nations. Jerusalem will be trampled on by the Gentiles until the times of the Gentiles are fulfilled. [emphasis mine]

Isaiah 51:22-52:3

22 This is what your Sovereign LORD says,
your God, who defends his people:
"See, I have taken out of your hand
the cup that made you stagger;
from that cup, the goblet of my wrath,
you will never drink again.

23 I will put it into the hands of your tormentors,
who said to you,
'Fall prostrate that we may walk over you.'
And you made your back like the ground,
like a street to be walked over."

Isaiah 52

1 Awake, awake, O Zion,
clothe yourself with strength.
Put on your garments of splendor,
O Jerusalem, the holy city.
The uncircumcised and defiled
will not enter you again.

2 Shake off your dust;
rise up, sit enthroned, O Jerusalem.
Free yourself from the chains on your neck,
O captive Daughter of Zion.

3 For this is what the LORD says:
"You were sold for nothing,
and without money you will be redeemed."

Even as a Gentile grafted into the olive tree (Romans 11), Lord I thank you that you have guaranteed the safety of, and always been faithful to the eventual restoration of Israel, and that you continue to watch over your people even today. Thank you for the unrivaled accuracy and reliability of these prophesies written 2,700 years ago, so that by reading them, people will be without excuse.

For since the creation of the world God's invisible qualities - his eternal power and divine nature - have been clearly seen, being understood from what has been made, so that men are without excuse. For although they knew God, they neither glorified him as God nor gave thanks to him, but their thinking became futile and their foolish hearts were darkened. [Romans 1:20-21]