I often feel like the clues in the Bible paints a picture that is very different from what we typically see produced by Hollywood and the media in general. Many of us grew up seeing a scene replaying Cain killing Abel and it’s almost always ends with Cain turning away to walk off when he’s unknowing killed by Cain bashing his head in from behind with a rock. But is that what scripture hints at?
The first thing to consider is Cain’s very name itself. Cain comes from the word Qayin (H7014) “ קַ֛יִן “ is essentially the same for the word qayin ( H7013) which means spread. Secondly in Genesis 4:8 when it says Cain killed Abel the phrase is “ wayya hargehi ( H2026 ) and that exact phrase is only found in two other verses which are both a retelling of the same story. In 2 Samuel 23:21 and 1 Chronicles 11:23 they both tell of how Benaiah killed a Egyptian after taking the Egyptians very on SPEAR from him.
But I also believe that it encourages us to look into the similarities of Abel and Jesus. Jesus was also stabbed by a spear by those who was part of his family. Jesus called other men his brothers. John 19:34 tells us of that story. I also can’t help but to think of how God asked Cain, “What did you do?” and linking it to Jesus on cross crying out to God that “ they don’t know what they are doing”. Cain was then marked to be protected from being murdered with the threat his own killers would be punished 7 times over and Jesus was marked with wounds for Thomas to scrutinize as proof that he was also marked so all could see he conquered death.
So all in all I believe the clues points towards Cain most likely having killed Abel with a spear. Speculation? Yes. But that does not mean it was not researched.