And when was the last time that you ask a dead man about God, and he responded in faith?
You either have not listened to a word that has been said throughout this thread or you are deliberately playing dumb.
The soul is not dead, it can function as God intended when He controls the sin nature and provides the truth one needs to hear. We were created to believe God's word, it is how we function in life by believing. There is nothing special about a man believing something. All the worth is in the object of belief, in the case of salvation, that would be Christ.
Spiritual death is the legacy we have inherited, it is the wages of sin with physical death being the outward confirmation of the inner reality. It is this death we are saved from when we are born from above and made spiritually alive. You keep putting the cart before the horse. We are not saved from death to believe, we believe to be saved. The heart is not intrinsically corrupted and therefore we do not need a heart transplant. What we need is grace (power) and truth (light) of which, we have more than abundance in Christ.
We believe in our heart then we are saved by the grace of God according to His promise.
Romans 10:9-13
9 that if you confess with your mouth the Lord Jesus and believe in your heart that God has raised Him from the dead, you will be saved. 10 For with the heart one believes unto righteousness, and with the mouth confession is made unto salvation. 11 For the Scripture says, “Whoever believes on Him will not be put to shame.” 12 For there is no distinction between Jew and Greek, for the same Lord over all is rich to all who call upon Him. 13 For “whoever calls on the name of the Lord shall be saved.”
Belief precedes regeneration and faith.