Complex sentence: God accepted Abel's sacrifice because of Abel's righteousness and Cain, out of jealousy, threw a rock at Abel, leading to the first murder in human history: the murder of Abel by Cain.
Split into simpler sentences: God accepted Abel's sacrifice because of Abel's righteousness and Cain, out of jealousy, threw a rock at Abel. Leading to the first murder in human history: the murder of Abel by Cain.