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?
What was the first beast like?
How comprehensive are these commandments?
After conferring over this matter, what decision was reached by the apostles?
For how long a time was the seventh-day Sabbath observed in the Christian church?
But are not the righteous dead in heaven?
When will the resurrection of the just occur?

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