It has always puzzled me why Abel, a herder of sheep, would want to kill his own animals to offer them up to God.
Prior to the flood, it would be fair to say that no one ate meat. Maybe they did, maybe they didn't, but assuming that meat
was not eaten, why would Abel's offering be better than Cain's offering?
Some JW's say that Abel knew in advance about the ransom sacrifice, but this can't be true as it wasn't known then that
a Messiah would come and offer up his own blood and delivered them.
Genesis 4:2 read: "...And Abel came to be a herder of sheep, but Cain became a cultivator of the ground."
So from this scripture, Abel was a shepherd and Cain was a cultivator.
Genesis 4:3 "And it came about at the expiration of some time that Cain proceeded to bring some fruits of the ground as an offering to Jehovah"
The idea of thanking God for his provisions was not wrong in itself, but what could God possibly want with a bunch of fruit? I have to ask the question
why prayer was not utilized at this time when his father Adam had a habit of talking with Jehovah in the breezy part of the day.
Genesis 4:4 "But as for Abel, he too brought some firstlings of his flock, even their fatty pieces."
What possessed Abel to mistreat and kill his animals? Why would he imagine that spilling their blood could possibly please God?
Genesis 4:4, 5 answers this question, "Now while Jehovah was looking with favor upon Abel and his offering, he did not look with favor upon Cain and upon his offering.
And Cain grew hot with great anger."
Reading this short passage in Genesis suggests that in order of events, Cain was the first to make an offering of vegetable matter, followed by Abel
who offered dead animals that he was supposed to have been looking after.
The passage does not indicate why God was pleased with Abel's sacrifice and not Cain's. Perhaps there was competition? That wouldn't make sense though.
This passage suggests that Abel began the practice of offering up animals as a sacrifice to God, and that God was pleased with the deaths of animals rather than an offering of vegetable matter.
The question remains - why?