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.

What portion of this period was to reach to Christ, the Messiah, or Anointed One?
17. After having made atonement for the people in the most holy place, what did the high priest next do?
Whose sovereignty is thus challenged?
Then in order to keep the Sabbath day holy, what must be recognized?
On what day did Paul and his companions preach to the devout women at Phillippi?
What means will be employed to lead the people back into this false worship?
Would God have His people unite in these combinations?

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