For your consideration: God is very clear that until this day of Judgment, we are all in the grave asleep or sheowl... Daniel 12:2 "and many of them that sleep in the dust of the earth shall awake, some to everlasting life and some to shame and everlasting contempt". When evil people die, they leave a memorial of there actions or everlasting contempt. It doesn't say everlasting torment. God will take these memories from us, We will forget them, but God will not. The idea of lethal injection I believe came from God, because he states in Matthew through Jesus , that both their body and soul will be destroyed. Daniel 12:2 is clear that all who have died, will be awakened AGAIN for the judgment. Isaiah 43:4 is clear that everything that is evil and this creation will roll up like a scroll, including the host of them that rejected him and they will dissolve and disappear forever. That is Gehenna or the lake of fire, what we called Hell. It is a very fast action, with forever results...not forever torment. I'm sure they will see there actions and rejection of God and his gift of Jesus as they dissolve away into non existence. Until that day, Jesus is clear we are sleeping. When the little girl died, the people were crying and Jesus kindly rebuked them when he said in Matthew 9:24- "Go away, the girl isn't dead, she is sleeping." This lines up with Daniel 12:2, which states again, "many who sleep in the dust of the earth, awake." Obviously, for the judgment. No one is in heaven yet and hades was for the demons, not us. We die or "sleep" as Jesus said.