Who Was Cain's Wife?

Biological deformities

Today, brothers and sisters (and half-brothers and half-sisters, etc.) are not permitted by law to marry because their children have an unacceptably high risk of being deformed. The more closely the parents are related, the more likely it is that any offspring will be deformed.

There is a very sound genetic reason for such laws. Every person has two sets of genes that specify how a person is put together and functions. Each person inherits one gene from each parent. Unfortunately, genes today contain many mistakes or mutations (because of sin and the Curse), and these mistakes show up in a variety of ways.

The more distantly related parents are, the more likely it is that they will have different mistakes in their genes. Children, inheriting one set of genes from each parent, are likely to end up with pairs of genes containing a maximum of one bad gene in each pair. The good gene tends to override the bad so that a deformity (a serious one, anyway) does not occur.

However, the more closely related two people are, the more likely it is that they will have similar mistakes in their genes, since these have been inherited from the same parents. Therefore, a brother and a sister are more likely to have similar mistakes in their genes. A child of a union between such siblings could inherit the same bad gene on the same gene pair from both, resulting in two bad copies of the gene and serious defects.

However, Adam and Eve did not have accumulated genetic mistakes. When the first two people were created, they were physically perfect. Everything God made was ‘very good’ (Genesis 1:31), their genes were perfect -no mistakes or mutations! But, when sin entered the world, God cursed the world so that the perfect creation then began to degenerate, that is, suffer death and decay (Romans 8:22). Over thousands of years, this degeneration has produced all sorts of genetic mistakes in living things.

Cain was in the first generation of children ever born. He (as well as his brothers and sisters) would have received virtually no imperfect genes from Adam or Eve, since the effects of sin and the Curse would have been minimal to start with (it takes time for these copying errors to accumulate). In that situation, brother and sister could have married with God’s approval, without any potential to produce deformed offspring.

By the time of Moses (a few thousand years later), degenerative mistakes would have built up in the human race to such an extent that it was necessary for God to forbid brother-sister (and close relative) marriage (Leviticus 18-20). Also, there were plenty of people on the Earth by now, and there was no reason for close relations to marry.

We will close our study by looking at one more issue….

Cain and the land of Nod

Some claim that the passage in Genesis 4:16-17 means that Cain went to the land of Nod and found a wife. Thus, they can conclude there must have been another race of people on the Earth, who were not descendants of Adam, who produced Cain’s wife - “Then Cain went out from the presence of the Lord, and settled in the land of Nod, east of Eden. And Cain had relations with his wife and she conceived, and gave birth to Enoch; and he built a city, and called the name of the city Enoch, after the name of his son.”