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.

I. What does Jesus declare Himself to be?
15. When God sent the Ninevites a warning message, how did they show their repentance, and what was the result?
By what means did Herod seek to destroy Christ?
Where was God to meet with Israel?
Through which covenant only is there remission f sins?
What striking figure is used to describe the destruction wrought under the second trumpet?
What reason did Paul give for glorying in tribulations?

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