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 terrible judgment came in consequence of continued sin and transgression against God?
What similar instruction was given to Titus?
What was the effect of this apostasy?
From what statement do we learn that these ordinances related to the sacrificial system?
What answer did Elijah make?
How is their watch-care over God's people expressed?
When the Jews rejected Paul's preaching of the gospel, what did he and Barnabas say?

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