The Bible does not name Cain's wife. Based on the Genesis narrative, she must have been a descendant of Adam and Eve (a sister or niece) as they were the first and only human couple on earth at that time. Intermarriage was necessary for humanity to populate the earth.

The word of God has the power to reveal to us certain things that we could not know in any other way. For example: How and when the world was created. The reason man is the way he is - sin. The true nature of God. What happens to us after we die. Human beings could study and speculate on these things for a thousand years and come up with many theories, but that's all they'd be, just theories...

According to Christian theology (based on the New Testament), Jesus is the Son of God and God in the flesh (the Incarnation). This is a central belief of Christianity, often understood through the doctrine of the Trinity.

Theologically, the Bible is considered the inspired Word of God, and therefore infallible (trustworthy) and authoritative for faith and practice. Historically, there is strong manuscript evidence and archeological support for its general historical claims.

The doctrine of the Trinity teaches that there is one God who eternally exists as three distinct persons: the Father, the Son (Jesus Christ), and the Holy Spirit. They are co-equal and co-eternal.