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.

When accused by His enemies before Pilate, how did Christ treat these accusations?
What, in prophecy, is symbolized by waters?
5. What previous instruction connected with the vision of Daniel 8 was thus being more fully carried out?
How did Jesus show His loyalty to God?
Does faith render the law void?
10. Because the disciples plucked a few ears of corn on the Sabbath day to satisfy hunger, what accusation did the Pharisees make against them to Christ?
By what have these things been revealed to us?

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