Where did Cain's wife come from?

The Bible tells us of the very family on earth: Adam and Eve and their two sons. Cain killed his brother Abel. But afterwards we read that Cain was married (Genesis 4:17). Where did this woman come from?

God does not reveal everything to us in the Bible. He wants us to trust in Him and that is the most important message of the Bible. Many questions are not fully answered in the Bible, because they are irrelevant to us. The Bible does not say in detail where Cain got his wife. We do read in Genesis 5:4 that Adam and Eve had other sons and daughters apart from those that we read of in the Bible. The only answer we therefore have is that Cain married one of his sisters.

So don't worry yourself too much about Cain's wife. Cain and all his descendants died (Genesis 7:21-23). The important person to know is the Lord Jesus Christ (1 John 5:10-13). Is he your Saviour and the Lord of your life? Then you have become part of God's family (John 1:12).