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.

Will sin and its evil results ever appear again?
How necessary is the experience of sanctification?
For what are we told to pray at this time?
When Christ thus ministers the law in the heart, what does it become?
When tempted to bow down and worship Satan, what reply did Christ make?
What was the object of the church bishops in securing these Sunday laws?
What encouragement is given to study this book?

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