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, therefore, should we ascribe glory and honor?
What does the prophet Jeremiah declare Christ to be?
What event is closely associated with the establishment of God's everlasting kingdom?
Who is the real power operating through the beast and his image, and demanding worship?
From what statement do we learn that these ordinances related to the sacrificial system?
When did the moon refuse to give her light?
What work constitutes the fast most acceptable to God?

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