I do.
Unless Cain and Abel are priests serving under Aaron it is an error to assume that they are bound by rules not yet created.
Airclean-- Good Morning Rev John-- I will try this once more so you may understand. Adam as I believe was a son of GOD. Just as the secound Adam would be. So by line would his children.Those who are Sons of GOD, are of the high prists hood. As is the Sons of GOD today. 1Pet2:9.
And of course, in that same later code there are allowances for grain offerings so again, insisting that it was a lack of blood sacrifice is what cause God to reject Cain is ignorant. I hope you noticed the several verses of Chapter 29 in which God calls for the finest wheat flour and olive oil. Its almost like God doesn't know that things of the earth are unacceptable sacrifices.