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 distinct purpose did Christ have in giving Himself for the church?
How did the aged prophetess Anna express herself at the sight of Jesus?
How came Jesus to live for a time in Egypt?
After giving instruction by the use of parables, what question did Christ ask His disciples?
How does God regard those who walk in His law?
How long will they live?
What universal chorus of praise will then be heard?

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