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.

After Pentecost, how was the gospel preached?
How is unity preserved in the diversities of gifts?
3. What urgent petition of the prophet connects this prayer with the vision of the taking away of the continual mediation and the desolation of the sanctuary recorded in Daniel 8?
How does Paul describe this dedication of the covenant?
When, according to prophecy, were men to amass great wealth?
5. What, in the parable, did God say to the rich man who thought to build larger barns in which to store his goods?
For what will the heathen he assembled in Palestine?

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