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.

Upon what evidence did Jesus base His Messiahship?
What is the evidence of genuine, living faith?
How highly does God regard obedience?
With what was He filled?
What did Pilate propose to do when Christ was again brought before him?
After resting on the seventh day, what did God do?
For what purpose was man made?

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