Why did not these ancient worthies receive the promise?

Answer

"And these all, having obtained a good report through faith, received not the promise: God having provided
some better thing for us, that they without us should not be made perfect." Heb. 11: 39,40.

By what is this cleansing from sin and fitting for God's service accomplished?
Of whom was Christ to be born?
What were sinners desiring pardon instructed to do?
Through which covenant only is there remission f sins?
Is there any danger of God's chosen people forgetting Him?
How are the birth, work, and ascension of Christ briefly described?
In what respect is the reaping of God's people to differ from their sowing?

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