What is the essential teaching of the new covenant?

Answer

"For this is the covenant that I will make with the house of Israel after those days, says the Lord; I will put
My laws into their mind, and write them in their hearts: and I will be to them a God, and they shall be to
Me a people." Heb. 8: 10.

Upon what ground were the previous promises then renewed to Abraham?
Why do the inhabitants of heaven worship God?
What did Joseph, in Egypt, say when tempted to sin?
What was the object of the church bishops in securing these Sunday laws?
What promise is made to those that mourn?
How does God regard one who abandons his faith?
How did Elijah pray before obtaining his request?

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