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 kind of faith avails with God?
What question did others raise in opposition to this view?
6. Under the influence of her tender care and faithful instruction, what is said of the child life of Jesus?
What will occur when the Lord descends from heaven?
Under what threatened penalty is the worship of the image of the beast enforced?
What is the essential principle of the law of God?
How does God regard sorcerers?

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