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 precious promise did Jesus make to His disciples shortly before His crucifixion?
6. How did they manifest their displeasure at His healing the man with the withered hand on the Sabbath?
1. How did Christ feel concerning Jerusalem, as He was about to make His final visit to the city before His crucifixion?
When we see all these things, what are we to know?
What false idea of this gathering were some to hold?
How did Elijah pray before obtaining his request?
What will finally he the privilege of God's children?

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