Why did cain murder abel?

According to the myth, jealousy over a better offering to God.

Out of envy 🥺🥺🥺

Anyone is capable of murder, given the circumstance:  

There were over 5 millions humans on earth when God sent Adam and Eve (Nephilim Angels) to preach to, not mate with mankind(forbidden fruit). If you mate with them, you die(lose supernatural power). It is GOSPEL that makes man in God's own image. Adam was made fully aware of the consequence of mating with humans: Eve was NOT.

@6000 years ago, when Eve mated with a Nodite tribesman from east of Eden, Cain was conceived. Cain was not Adam's son. Then Adam mated with a Nodite woman.

It was Abel's mocking Cain as a stepchild that provoked Cain to retaliate, killing Abel.

The Babylonians forced the EXILED Jews to rewrite their history to reflect that all humans (not just the Jews) come from Adam and Eve. 

Fake news! Never happened. This is CNN. 

Read the story in Genesis the reason why he killed him is found there.

Overcome by jealousy, "Cain rose up and slew his brother Abel."

He knew nothing would happen since it was a Fairy Tale .

It is a parable highlighting humanities transition hunter gather to farmer, the agricultural revolution. Able brought meat for sacrifice because he was a hunter and herdsman. Cain brought grain and veggies because he was a farmer. Cain slew Able, farmers fenced off the land and allowed for large cities to be possible, killing off tribal hunting villages.