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 was the result of the Jews' not accepting Christ?
What did He say to the two blind men as He healed them ?
How did He show that He loved them?
In the interpretation of the vision, how is this self exaltation set forth?
What did He thus abolish?
What will be the first plague, and upon whom will it fall?
By what terms did Christ refer to the two resurrections?

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