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.

Where in the Bible do we find the first prom Redeemer?
In what condition are all men?
Who awakens the soul to a sense of its sinful condition?
How does godly sorrow for sin manifest itself?
Were the gifts of the Spirit to continue forever?
For what did Christ, just before His ascension, tell His disciples to wait?
Through whom is this first dominion to be restored?

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