paarsurrey,
Jesus was dead when they took his body down after crucifixion. The soldiers had checked, then pierced him with a spear to make sure. Those that handled his body were also sure he was dead.
Look again at the Psalm of David.
'For thou wilt not leave my soul in sheol; neither wilt thou suffer thine Holy One to see corruption.' (Psalm 16:10)
When a person dies their soul descends into sheol, the grave, there to await the resurrection. In the case of Jesus, however, the soul was not left in sheol, nor did his body become corrupt; both his body and soul were raised up after three days and nights. This is the first resurrection, and Jesus was the firstfruits of the harvest.
Revelation 20:6. 'Blessed and holy is he that hath part in the first resurrection: on such the second death hath no power, but they shall be priests of God and of Christ, and shall reign with him a thousand years.'
If you are part of the first resurrection from the dead, then you will reign with Christ in his kingdom. Your body and soul will be raised incorruptible and immortal. (I Corinthians 15)
The death of the body is the first death, and it is not the death that is to be feared. The death to be feared is the second death, with is forever, and comes after judgement.
Here is what Jesus said; 'And fear not them which kill the body, but are not able to kill the soul; but rather fear him [God]which is able to destroy both soul and body in hell.' (Matthew 10:28)
When you see the word 'sheol' used, you know that it is the state of death.