Hell (Greek Gehenna): Gehenna was the name of a valley outside Jerusalem. Some kings of Judah used this place to worship idols and even offered children as sacrifices by fire (2 Chronicles 28:3; 33:6; Jeremiah 7:31; 32:35). King Josiah eventually destroyed this site (2 Kings 23:10).
In the New Testament, Gehenna refers to the place where God punishes. Jesus taught that unless his followers live with greater righteousness (living in the right way before God), they will not enter God’s kingdom (Matthew 5:20). Instead, they will face eternal punishment (5:22; 23:33).