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 Bible teaches that upon physical death, the souls of believers go immediately to be with Christ (Heaven), while the souls of non-believers are separated from God awaiting final judgment (Hell). There will be a future bodily resurrection for all.

The Bible presents God as the Creator of the universe, all-powerful (omnipotent), all-knowing (omniscient), and everywhere (omnipresent). He is often described as loving, just, and holy.

The Bible emphasizes salvation through faith in Jesus Christ (Ephesians 2:8-9, John 3:16). It involves repenting of sin and trusting in Jesus' death and resurrection for the forgiveness of sins.

Yes, the Gospels mention Jesus having brothers (James, Joseph, Simon, and Judas) and sisters (Mark 6:3, Matthew 13:55-56). Interpretations vary on whether these were biological children of Mary and Joseph, step-siblings, or cousins.