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 encouraging statement follows concerning the supply of power to the faint?
Whose destruction was made certain by the death of Christ ?
Who opens the judgment and presides over it?
For whom did Christ say the Sabbath was made?
Whom did Christ indicate as fulfilling this prophecy?
Who has everlasting life?
In tempting Christ, what ownership did Satan claim?

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