In the Old Testament text we find the story of the forefather Isaac and his dizygotic twins Esau and Jacob. Both in the construction of the body and in the psychology of the personality, they were very different, as the Old Testament text testifies. Because dizygotic (fraternal) non-identical twins have a very small chance of inheriting the same chromosome profile, they inherit 15% to 25% of the genetic material from each parent, while they share an average of 30% to 50% of the genes, so there

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... re clear variations between them. We notice that the basic character trait of Esau is aggression and alpha behavior, while Jacob was a quiet and withdrawn young man in a tent. Later, following the text, we learn that Esau is selling his primacy, which rightfully belongs to him, and according to the words of the apostles, he seeks repentance with tears, but he does not find it. Having an insight into neuroendocrinology and neuroscience itself, we try to hypothetically explain that Esau is, in fact, a psychopathic personality structure and that his behavior and inability to repent are justified by the neurogenesis and synaptogenesis of the profile of people with lower MAOA (monoamine oxidases). behavior.