Eve may well have believed that her son might be that redeemer and that is why she called him Cain and said “I have gotten a man with the help of the Lord” (Gen 4:1). After God told Eve that she would conceive of a son that would crush the head of the serpent (Satan) mentioned in Genesis 3:15 which has been called the protoevangelium, the promise of a redeemer for fallen mankind, Eve called her son Cain.