What does the Hebrew word Sheol mean?
In the Old Testament, the word for which hell is given is sheol, a word whose root meaning is unseen. It will be translated as hell 31 times, the grave 32 times (since someone in the grave is unseen), and the pit three times in the KJV. Yet in the Old Testament sheol was not exclusively a place of punishment, for faithful Jacob was there (Gen. 37.35, 42.38, 44.29, 31). Righteous Job also longed for it in Job 14.13. David spoke of going to sheol in Ps. 49.15 and Jesus went there, Ps. 16.10 and Acts 2.24-31. In all these cases, these men were unseen because they were dead. Many times the Bible uses the word sheol of national judgments, i.e., the vanishing of a nation. In Isa. 14.13, 15, Isaiah said Babylon would go to sheol, and she vanished. In Ezek. 26.19-21, Tyre so vanished in sheol. Likewise, in the New Testament, in Mt. 11.23, 12.41, Lk. 10.15, and 11.29-32, Jesus said that Capernaum would so disappear. These nations and cities didn't go to a particular location, but they were going to disappear, and they did. They were destroyed. Thus, sheol is used commonly of national judgments in both the Old and New Testaments. (The word Hades is the Greek for Sheol.)