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.

How is such a baptism described?
Upon what basis is justification granted?
By what name is Christ appropriately called?
Did Christ, while on earth, keep the Sabbath?
According to the New Testament, what day immediately precedes the first day of the week?
What will he the final result of the gospel?
How are God's remnant people described?

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