Ok, so this question suddenly popped in my head today and it's been bugging me for more than several hours. And since it seems I can't come to an answer, I was thinking of asking you guys, maybe you can provide me with some examples of answers, at least.
So, I was thinking that since two blood related persons who have children and their children have children of their own, but between themselves, and so on, eventually the genes will go berserk, so to speak, and the children will no longer be normal (mentally speaking), then, my question is: religiously speaking (I am a Christian), how is it possible that all humans are born from only two persons, Adam and Eve? Because this means that their first children (or child, I don't know very well the biblic story) had to have their own offspings between themselves, which means humanity could not have survived until the present day.
I hope my question was clear enough, I'm not English at origin, so in case I didn't explain very well, please do tell.
Try to give some personal answers and don't argue, it's a simple question that's really been bugging me...
Really appreciate the effort!

Haha, I've wondered that too....
Then My dad told me. He think that Adam and Eve were not two people but two groups of people. One group of males and one group of females. then I was just: .__. wut...? er.. okay ^ ^"

Not sure if thats a conclusion but, would be nice If there was someone to answer this XD...

It’s a common question for both believers and unbelievers. Where did all the people come from? Where did Cain find his wife? How could he build a city when there should have been only four people?Let’s begin by saying that the Bible doesn’t specifically tell us. There are many details that the Bible leaves out, but that doesn’t make the story less true. After studying the absence of details and drawing conclusions from reason, the Bible often appears more reasonable than it would if the details were included.The Bible does tell us that Adam and Eve had many more sons and daughters. In Genesis 5:4, we find, “After Seth was born, Adam lived 800 years and had other sons and daughters” (NIV). While this does not tell us about the chronology of the events, it tells us that there were more than just four people on earth during the early years of mankind.Now that we see that there was more than just Cain and Seth, consider man’s extremely long lifespan in the days between Adam and Noah. The average man listed in the Bible during this time lived about 900 years. To help you understand this, Adam was still alive when Noah’s father was born. There were 8 generations living during Adam’s lifetime through Seth’s lineage.Using this reasoning, the population when Cain took a wife was probably large enough to have several eligible wives for Cain. So Adam and Eve’s children most likely married among each other to start the growth of the population.Some people bring up the problem of incest when talking about this topic. It was common through Abraham’s days to find sibling marriages. This was how God filled the earth. Considering the purity of the gene pool through the first dozen or so generations, it is not likely that this would cause the difficulties it would cause today.

When Adam had lived 130 years, he had a son in his own likeness, in his own image; and he named him Seth. 4 After Seth was born, Adam lived 800 years and had other sons and daughters. 5 Altogether, Adam lived a total of 930 years, and then he died.6 When Seth had lived 105 years, he became the father[b] of Enosh. 7 After he became the father of Enosh, Seth lived 807 years and had other sons and daughters. 8 Altogether, Seth lived a total of 912 years, and then he died.9 When Enosh had lived 90 years, he became the father of Kenan. 10 After he became the father of Kenan, Enosh lived 815 years and had other sons and daughters. 11 Altogether, Enosh lived a total of 905 years, and then he died.12 When Kenan had lived 70 years, he became the father of Mahalalel. 13 After he became the father of Mahalalel, Kenan lived 840 years and had other sons and daughters. 14 Altogether, Kenan lived a total of 910 years, and then he died.15 When Mahalalel had lived 65 years, he became the father of Jared. 16 After he became the father of Jared, Mahalalel lived 830 years and had other sons and daughters. 17 Altogether, Mahalalel lived a total of 895 years, and then he died.18 When Jared had lived 162 years, he became the father of Enoch. 19 After he became the father of Enoch, Jared lived 800 years and had other sons and daughters. 20 Altogether, Jared lived a total of 962 years, and then he died.21 When Enoch had lived 65 years, he became the father of Methuselah. 22 After he became the father of Methuselah, Enoch walked faithfully with God 300 years and had other sons and daughters. 23 Altogether, Enoch lived a total of 365 years. 24 Enoch walked faithfully with God; then he was no more, because God took him away.25 When Methuselah had lived 187 years, he became the father of Lamech. 26 After he became the father of Lamech, Methuselah lived 782 years and had other sons and daughters. 27 Altogether, Methuselah lived a total of 969 years, and then he died.28 When Lamech had lived 182 years, he had a son. 29 He named him Noah[c] and said, “He will comfort us in the labor and painful toil of our hands caused by the ground the Lord has cursed.” 30 After Noah was born, Lamech lived 595 years and had other sons and daughters. 31 Altogether, Lamech lived a total of 777 years, and then he died.32 After Noah was 500 years old, he became the father of Shem, Ham and Japheth.

bump

I understand what you're saying. So the conclusion is, just as I thought, that at the beginning people were born from brothers and sisters and such. This may refer to the term "incest" that we call today, but this is another subject. But even so, if this was permitted in those days, then why today is it considered a tabu? And as I stated in the first post, if children came from blood related persons and so on, humanity should have been extinct today, so how was it possible to evolve so much? Is it, maybe, because God permitted it to be possible at the beginning, but, as they say, what's much is too much, and He changed His mind? Again, this is from a religious point of view.

There appears to be a 'Bible Theory' going around that starts with the premise of three major races of human beings:The Black race - NegroThe White race - CaucasianThe Yellow race - Orientaland these three races came from the three sons of Noah:HamJaphethShemSpecifically, according to this theory:Blacks came from HamWhites came from JaphethYellows came from Shem

This is the family history of Shem, Ham, and Japheth, the sons of Noah. After the flood these three men had sons. 2 The sons of Japheth were Gomer, Magog, Madai, Javan, Tubal, Meshech, and Tiras. 3 The sons of Gomer were Ashkenaz, Riphath, and Togarmah. 4 The sons of Javan were Elishah, Tarshish, Kittim, and Rodanim. 5 Those who lived in the lands around the Mediterranean Sea came from these sons of Japheth. All the families grew and became different nations, each nation with its own land and its own language. 6 The sons of Ham were Cush, Mizraim, Put, and Canaan. 7The sons of Cush were Seba, Havilah, Sabtah, Raamah, and Sabteca. The sons of Raamah were Sheba and Dedan. 8 Cush also had a descendant named Nimrod, who became a very powerful man on earth. 9 He was a great hunter before the Lord, which is why people say someone is "like Nimrod, a great hunter before the Lord." 10 At first Nimrod's kingdom covered Babylon, Erech, Akkad, and Calneh in the land of Babylonia. 11 From there he went to Assyria, where he built the cities of Nineveh, Rehoboth Ir, and Calah. 12 He also built Resen, the great city between Nineveh and Calah. 13 Mizraim was the father of the Ludites, Anamites, Lehabites, Naphtuhites, 14 Pathrusites, Casluhites, and the people of Crete. (The Philistines came from the Casluhites.) 15Canaan was the father of Sidon, his first son, and of Heth. 16 He was also the father of the Jebusites, Amorites, Girgashites, 17 Hivites, Arkites, Sinites, 18 Arvadites, Zemarites, and Hamathites. The families of the Canaanites scattered. 19 Their land reached from Sidon to Gerar as far as Gaza, and then to Sodom, Gomorrah, Admah, and Zeboiim, as far as Lasha. 20 All these people were the sons of Ham, and all these families had their own languages, their own lands, and their own nations. 21 Shem, Japheth's older brother, also had sons. One of his descendants was the father of all the sons of Eber. 22 The sons of Shem were Elam, Asshur, Arphaxad, Lud, and Aram. 23 The sons of Aram were Uz, Hul, Gether, and Meshech. 24 Arphaxad was the father of Shelah, who was the father of Eber. 25Eber was the father of two sons -- one named Peleg, because the earth was divided during his life, and the other was named Joktan. 26Joktan was the father of Almodad, Sheleph, Hazarmaveth, Jerah, 27 Hadoram, Uzal, Diklah,28 Obal, Abimael, Sheba, 29 Ophir, Havilah, and Jobab. All these people were the sons of Joktan. 30 They lived in the area between Mesha and Sephar in the hill country in the East. 31 These are the people from the family of Shem, arranged by families, languages, countries, and nations. 32 This is the list of the families from the sons of Noah, arranged according to their nations. From these families came all the nations who spread across the earth after the flood.

...GHF? What the fucking hell?

9<< what?

Thank you for the info!

Yea. I've been wondering about that thing, too.