What did Yeshua do after He died on the cross? Is Hell the same thing as Sheol/Hades? What is the significance of the Valley of Hinnom and Gehenna? Peter's (and the boys) great  teaching on Shavuot/Pentecost (Acts 2) showed how Yeshua's body would not be abandoned or decay in Sheol/Hades (Psalm 16).  Through His death and resurrection, Yeshua defeated the principalities and powers and set the captives free. He now holds the keys of death and Hades which He gave to Peter and the boys to build His ekklesia.