How early was this sacrificial system known?

Answer

"By faith Abel offered unto God a more excellent sacrifice than Cain, by which he obtained witness that he
was righteous, God testifying of his gifts." Heb. 11: 4. See Gen. 4: 3-5; 8: 20.

To whom did this promised seed refer?
What was predicted of Christ's preaching?
How did Christ say those who rejected Him reasoned?
How did the aged prophetess Anna express herself at the sight of Jesus?
14. How was the sanctuary itself to be cleansed, and how were the sins of the people to be finally disposed of?
What has been one great characteristic of the Papacy?
What are we admonished to overcome?

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