OK then.
Yes it is. The brain is inextricably linked to consciousness. But there is nothing in the Bible to argue with that. The Jews did not believe in a separate part of us that departs the body at death. There are no disembodied souls in the Bible. The spirit realm is only inhabited by spirit beings....God and his angels, not former humans. None of the angels were born as humans because they were all created to live in heaven long before humans were created to live on earth. In both realms, everlasting life was to be enjoyed.
This is the promise of Jesus to his anointed ones. Because a limited number of humans were going to be taken to heaven to rule with Christ, he said he was going to prepare a place for them. Then he said he was going to come back for them, but not until his Kingdom was established.
The apostle Paul wrote.....
"Moreover, brothers, we do not want you to be ignorant about those who are sleeping in death, so that you may not sorrow as the rest do who have no hope. 14 For if we have faith that Jesus died and rose again, so too God will bring with him those who have fallen asleep in death through Jesus. 15 For this is what we tell you by Jehovah’s word, that we the living who survive to the presence of the Lord will in no way precede those who have fallen asleep in death; 16 because the Lord himself will descend from heaven with a commanding call, with an archangel’s voice and with God’s trumpet, and those who are dead in union with Christ will rise first. 17 Afterward we the living who are surviving will, together with them, be caught away in clouds to meet the Lord in the air; and thus we will always be with the Lord." (1 Thessalonians 4:14-17)
So no one was to go to heaven until Jesus came back for them.
That was a parable, not something to be taken literally. Actually if it was taken literally, it is rather ridiculous. Do you think heaven and hell are within speaking distance to one another? And do you think that a drop of water on the end of someone's finger could cool the tongue of a person in flames? Does the parable say anything about the rich man other than that he was rich? And does it say that the beggar was righteous...or just impoverished?
It is a parable about the Pharisees and the "lost sheep" to whom Jesus was sent. Their 'deaths' signified a change in status. The Pharisees lost "the bosom of Abraham" (a position signifying God's favor) and it was gained by the lost ones who accepted Jesus as Messiah.The anguish of the rich man was because of Jesus' exposing them for the hypocrites that they were. (Matthew 23:13-33)
This was a vision according to Jesus. It wasn't literally Elijah and Moses speaking to Jesus. He had made a statement that some among his apostles would not taste death until they saw him in his Kingdom. The transfiguration was a vision of Jesus in his kingdom glory. (Matthew 17:9) God's kingdom is founded on the Law and the Prophets, so I see in the transfiguration, Jesus as King, Elijah representing the prophets and Moses representing the Law. Peter James and John received a rare privilege.
As one of the anointed, (with the "heavenly calling") Paul, like all the other anointed ones, eagerly look forward to shedding their earthbound, sinful fleshly bodies and taking on the immortal spiritual bodies with which they will rule with Christ in heaven.
Everything is perfectly explainable when you know the truth.
Back to you....