"Graves were protected by gates and bolts; therefore Sheol was likewise similarly guarded. The separate compartments are devised for the separate clans, septs, and families, national and blood distinctions continuing in effect after death. That Sheol is described as subterranean is but an application of the custom of hewing out of the rocks passages, leading downward, for burial purposes." SHEOL - JewishEncyclopedia websource 02-10-2010.
