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.
 


16. When the prodigal son, in the parable, repented and turned toward home, what did his father do?
In whom has God made us accepted?
What admission did they secure from Him as the basis of condemning Him?
Whom does the Lord chasten?
21. What shows that the new, or second, covenant and the Abrahamic covenant are virtually the same?
What example did Christ set in Sabbath observance?
When did Christ say the good would he recompensed?

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