Okay I found something in the Bible today it was something I was wondering about for quite a while. Well I know that most of yal know about Caine and Able and Seth and their story and that Caine married a woman from the city of Nod east of Eden (mostly in the Bible when god refers to the east of something its normally going towards evil).Well I am sure most of yal didnt think about this but I've always thought where did she come from cus did she just apear or what well i found this.. and this is my thought and the verses together...

"Who was Cain's wife? Was Cain's wife his sister?"

The Bible does not specifically say who Cain's wife was The only possible answer was that Cain's wife was his sister or niece or great-niece, etc. The Bible does not say how old Cain was when he killed Abel (Genesis 4:8).Since they were both farmers, they were likely both full-grown adults, possibly with families of their own. Adam and Eve had surely had more children than just Cain and Abel at the time Abel was killed - the definitely had many more children later (*Genesis 5:3-5* - When Adam was 130 years old, his son Seth was born, and Seth was the very image of his father. After the birth of Seth, Adam lived another 800 years and he had other sons and daughters. He died at the age of 930). The fact that Cain was scared for his own life after he killed Abel (Genesis 4:14) indicates that Abel had a wife and children and maybe even grandchildren in Genesis 4:13 Cain is complaining to got that his punishment is too great for him to bear because as most of our human nature if someone murdered our father we would want to kill them right well Cain killed Abel and he is complaining that "All who see me will try to kill me!" the only way thats true is if the others were Abel's descendants. Cain's wife (Genesis 4:17) was a daugter or granddaugter of Adam and Eve.

Since Adam and Ever were the first (and only) human beings, their children would have no other choice than to intermarry. God did not forbid inter-family marriage until much later when there was enough people that intermarriage was not necessary (Leviticus 18:6-18). The reason that incest often results in genetic abnormalities in children is that when two people of similar genetics (i.e. a brother and sister) have children - genetic defects are far more likely to result because both parents had the same defects themselves. When people from different families have children - it is highly unlikely that both parents will have the same genetic defects. The human genetic code has become increasingly "polluted" ocer the centuries as genetic defects are multiplied, amplified, and passed down from generation to generation. Adam and Eve did not have any genetic defects, so that enabled them and the first few generations of their descendants to have a far greater qualit of health than we do now. Adam and Eve's children had few, if any, genetic defects. As a result, it was safe for them to intermarry. It may seem strange or even disgusting to think of Cain's wife being his siter. In the beginning, since God started with one man and one woman, the second generation would have no choice but to intermarry amongst themselves.