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 do transgressors bring upon themselves?
By what did Peter, on the day of Pentecost, say that Christ had been approved by God?
What comment has the Apostle Paul made upon this commandment?
Then by whom was the Sabbath made?
To whom does the Sabbath belong?
In view of this fact, what does Christ tell us to do?
Why did the unjust judge answer the widow's prayer?

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