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.

How was He treated?
What was to be the nature of the next kingdom after Babylon?
Of what was this memorial to he a sign?
According to the New Testament, what day immediately precedes the first day of the week?
What was the song of Moses?
When the state enacts religious laws, what is effected?
What universal chorus of praise will then be heard?

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