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 is inseparable from the experience of justification by faith?
What fate awaits blind teachers and their followers?
What was the result of Christ's working miracles at His first passover?
How much was included in the gift of Christ for the salvation of man?
How many of the dead will be raised?
What promise is made to the willing and obedient?
What are the objects of the Lord's Day Alliance of the United States?

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