Great Deluge no relation mark of Cain
Curse and Mark
According to Genesis 4:1–16, Cain treacherously murdered his brother, Abel, lied about the murder to God, and as a result, was cursed and marked for life. With the earth left cursed to drink Abel's blood, Cain was no longer able to farm the land. He becomes a "fugitive and wanderer", and receives a mark from God - commonly referred to as the mark of Cain - so that no one can enact vengeance on him.Exegesis of the Septuagint's narrative, "groaning and shaking upon the earth" has Cain suffering from body tremors. Interpretations extend Cain's curse to his descendants, where they all died in the Great Deluge as retribution for the loss of Abel's potential offspring.
no relation