The law has a purpose. In the case of Cain’s wife, there was no need for this law at the beginning. There are over 130,000 genes that we inherit from our parents (Explain genes to the ancient world). Genes are formed in pairs. At the moment of conception, we inherit one gene of each pair from each parent. In order to contract a genetic disease, both genes will be defective. Therefore, if two people come from the same parent, the likelihood that they both have the same defect is much greater. But if we marry outside of our family, the risk of genetic defects is greatly reduced. Man was not created with defective genes. Our defects are a result of the curse of sin. Cain was only one generation from the original creation and therefore there was no
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