2023-31_Evangelism - Sheol Hades Hell Part 1 of 3

OT Sheol, NT Hades and then Jesus Christ on Hell (Gehenna/geenna). Does Sheol and Hades give specific references to the afterlife, resurrection, spiritual realm or are these places physical places of the body? What about hell/gehenna, is that a physical or spiritual place and is it eternal? Who goes there? Jesus spoke of Hell on the Sermon on the Mount, should we when we evangelize?
Scripture references: Matt 7:5; Pro 27:6; Luk 9:6; Ps 139:7-8; Eph 2:4-6; 1 Tim 1:9; Phil 1:6; Jn 6; Rev 13:8; Rom 8:7; Jn 3:3; Luk 8; Ext 18:13-23