Cain and Abel
They were the ones that started the sibling feuds. Cain and Abel were the sons of Adam and Eve, but they didn’t see the newly created world in the same way. In the Bible, the older son, Cain, murders his younger brother, Abel, when the Lord favors Abel’s sacrifice over Cain’s.
They had a rocky relationship, Cain found a scapegoat for his anger in his brother Abel. Instead of turning introspective and repenting, he developed a terrible hatred for his brother.
