Prohibition on marriages of close relatives
In ancient times, no one conducted thorough research. There were few scientists and enlightened people. But even ordinary “children of Adam and Eve” began to notice such features of the offspring born from close relatives. Therefore, moral norms first arose that condemned intimate relationships between close relatives. There was even a statement that every clan needs “fresh blood.” Therefore, it was customary to choose wives and husbands not even from their own village, in order to certainly avoid the relationship of parents.
Over time, most countries introduced a ban on marriages within the same family. Even countries such as England, France and Spain began to turn a blind eye to ancestry and traditions. After all, the purity of blood among the nobles of these states stood above all else. However, the incredible number of freaks and mentally retarded children forced them to reconsider their canons. Nowadays, no one is surprised that the prince marries a fashion model, and the princess marries an entrepreneur. And a hundred years ago this was impossible!
Biblical morality
Continuing the topic of prohibitions on consanguineous marriages, it should be noted that in the Bible, the condemnation of such unions first appears in the time of Moses. And this is 2500 years after the fall of Adam and Eve. It is quite clear that the first generations were, as they say, “absolutes”. There were no errors in the genes of Adam and Eve, because God created them in his own image and likeness. Probably their children also received the purest genes.
But for sin, God cursed people and sent them illnesses, deformities and old age. How many generations this went on, and at what point those same genetic errors appeared, is almost impossible to say. However, the condemnation of marriages between close relatives came to humanity through the law of God, which was announced by Moses. As already stated, he lived almost three thousand years later. Of course, over such a period of time, a very extensive database of genetic errors has been collected. Considering the growing population of the planet, it was quite possible to abandon consanguineous marriages in favor of the health of nations.
Genetic deformities
Genetic deformities are disorders and errors in the genes that are passed on to the child by the father and mother. It has been known for some time now that a child receives half of his genes from his father, and half from his mother. Over the millennia of human existence, an incredible variety of sets of genes have accumulated, and almost every set contains so-called “errors.”
Modern researchers have proven that the less related the parents are, the less likely it is to pass on the same set of these errors to the child. In nature, the strongest wins, which means that in each pair of genes the “flawed” one will be suppressed by the “strong”. And the person will live his life calmly, being beautiful and healthy. So, if the father in his family all has a crooked nose, and the mother has asymmetrical ears, then the child will most likely get a normal nose and neat ears. In extreme cases, the flaws will not be very noticeable.
A completely different matter is parents who are closely related to each other. The set of their genetic errors is almost the same, and it is passed on to their offspring with a coefficient of “2”. Dad's crooked nose plus mom's crooked nose will give the child a completely ugly face.
Sons of Adam
The names of the children of Adam and Eve are known to every more or less enlightened person. The biblical story of the fratricide of Abel by Cain teaches us not to envy and not to betray our closest and dearest people. The name Cain became a common noun to denote an angry, envious and dishonest person.
Returning to the question of how many children Adam and Eve had, it must be admitted that if there were only two of them, then after the murder of Abel all people would be descendants of Cain. The Bible cannot allow humanity to come from a sinner in the worst sense of the word. Therefore, Cain dies from the Flood. And then only the third official son of Adam remains - Seth, who is considered the ancestor of Noah, who survived the Flood.
We can assume that to determine the origins of humanity, everything is quite simple. The children of Adam and Eve are three sons. One (Abel) died at the hands of his older brother. Therefore, giving him, Cain, the opportunity to continue to multiply and sow sin on Earth would be wrong. Therefore, he does not survive the Flood. But humanity still continues its history, which means there was a third son. It was he, Seth, who became the successor of the human race.
Women in the line of Adam
According to ancient tradition, the family is traced through the male line. Therefore, the Bible very rarely mentions someone's daughters. Perhaps this is why we do not know a single daughter that Adam and Eve conceived. Simply no one has ever written about them or mentioned their names.
But, as noted above, only three sons could not procreate and give life to all the nations inhabiting the modern Earth. Therefore, it is undeniable that Adam also had daughters. Moreover, there is a direct indication of this: and he gave birth to sons and daughters. So we boldly assert that not all of the children of Adam and Eve are mentioned in the Bible. Probably, the Bible was of interest only to those individuals whose lives fundamentally influenced the development of mankind.
Otherwise, the question again arises: “Where did Cain get his wife?” The Bible clearly states that when he went to the land of Nod, he was married. But since there is no hint about the origin of Cain’s wife, one can only guess who she was to the fratricide: a sister, a niece, or someone else.
Marriages with close relatives
If we stick to the version that there were two first people, then, without a doubt, we come to the understanding that the first people got married and started families with their closest relatives. Literally the first generations of people, in addition to being husband and wife, were also brothers and sisters to each other.
This is contrary to modern morality, when in many countries there is a ban on marriages between close relatives. But we are talking about events that took place more than two thousand years ago. Therefore, modern principles of morality and genetics cannot be transferred to the behavior of the first generations of people.