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.

BY what union does Christ reconcile both Jew and Gen. tile to God through the cross?
When used with reference to prophecy, what does the word fulfil mean?
What does Neander say of the securing of these laws?
What, according to the prophecy of Daniel, was to characterize the time of the end?
What will be the fifth plague?
What is the chief occupation of Satan and his angels?
How many does Paul say will suffer persecution?

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