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.

By what name are the sacred writings of the Bible commonly known?
How is eternal life bestowed?
14. What does the \"psalm for the Sabbath day\" suggest as proper acts and themes for thought and meditation on the Sabbath?
How are the birth, work, and ascension of Christ briefly described?
Why was this to be?
12. When Daniel and his fellows were about to be slain because the wise men of Babylon could not reveal to Nebuchadnezzar his dream, how did God answer their united prayers?
What gives us the victory in our conflict with the world?

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