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.
 


To how many is the Lord good?
How is the righteousness thus obtained described?
Upon what basis does the reward come to one who works?
What lesson did Christ design to teach in healing the man sick of the palsy?
Who was the seed here referred to?
Will even this terrible judgment lead men to repent?
Why was the parable of the importunate widow given?

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