The concept of Hell in the Old Testament is expressed in the word Sheol and pit, according to the context. Study the language of Isaiah 14:14-15 which is attributed to Satan.
(14) I will ascend above the heights of the clouds; I will make myself like the Most High. (15) Yet thou shalt be brought down to Sheol, to the uttermost parts of the pit. Isaiah 14:14-15 ASV
For Sheol cannot praise thee, death cannot celebrate thee: They that go down into the pit cannot hope for thy truth. Isaiah 38:18 ASV
Whatsoever thy hand findeth to do, do it with thy might; for there is no work, nor device, nor knowledge, nor wisdom, in Sheol, whither thou goest. Ecclesiastes 9:10 ASV