Israel has been told some information about the “secret things” of the future.

First, God will give them the prosperity of the blessing, but also the curses according to his covenant when they enter the Land.

Second, the curses will eventually overtake Israel because of their rebellion. They will be removed from the Promised Land and will be scattered into all the nations.

Third, Israel will never be utterly abandoned as if they were a pagan or Gentile nation. God will come and get them from the nations and bring them back into the Promised Land.

Fourth, Israel of the distant future will again possess the Promised Land of their ancestors. They will again prosper in the Promised Land. In fact, future generations will prosper to an even greater extent than their ancestors in the Promised Land.

Fifth, the Lord will provide a spiritual change in the soul of this people. Like their flesh had been circumcised, in the future the Lord will circumcise their hearts. This new spiritual nature will allow Israel to love the Lord with all their heart and soul. Then Israel will Live!

“The Christians are right: it is Pride which has been the chief cause of misery in every nation and every family since the world began.”
― C.S. Lewis

Masoretic Text
The Masoretic Text is a product of Jewish scribes in 500 AD.
The scribes systematically sorted and compared the various manuscripts. They wrote variant readings in the margins. There are about 1,200 variant readings, or one per page. We have approximately 1,000 Masoretic manuscripts. The oldest is from 916 AD. There is basically no variation in these texts.