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?
What message of entreaty has God sent to us through His appointed messengers?
What special message was given to Jonah for Nineveh?
3. Through what experience was the church to pass, and what was to develop in the church, before Christ's second coming?
What, then, is the nature of all Sabbath legislation?
What Christian grace are we exhorted to exercise in our expectant longing for this event?
To whom was the book dedicated?

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