To what Old Testament promise did Peter evidently refer?

Answer

"For, behold, I create new heavens and a new earth: and the former shall not be remembered, nor come into
mind." Isa. 65:17.

What will be the fate of those who do not obey the gospel of Christ?
How did Christ teach the people?
When did this long period expire?
Did they observe it after His resurrection?
In what condition did David expect to rise?
What is the gospel to everyone that believes?
What is to be the reward of those whose works are good?

Questions & Answers are from the book Bible Readings for the Home Circle