I disagree with the soul being in heaven though, I think its the spirit that returns to heaven, although in my view, the two are inseparable, you can't have one without the other. To be honest, I'm not sure I understand the difference between the two
The spirit leaves the body on death James 2:26. The soul is closely related to the spirit though not inseparable Hebrews 4:12 For sure, both are non physical and the body is.
The bible tells us the dead "know nothing", death is not a conscious state, of that we all agree.
Not me or millions of Christians. The WT quote Ecclesiastes 9:5 out of context. They do not pay any regard to "under the sun" in the very next verse, a phrase which appears in the book around 27 times. If the spirits of the dead are in heaven, are they all floating round "conscious of nothing"? How is it that "Abel still speaks, even though he is dead"? Hebrews 11:4 How is it that Abraham, Isaac and Jacob are described as not dead but living, even though their bodies are in the grave? Matthew 22:32
The spirit does go to the Lord, according to scripture. This just reminded me of a key point they made as well: "When Lazarus came back from the dead, did he speak of how great heaven was? No he did not because his spirit/soul died with his body." How would you respond to that?
Paul went to heaven 2 Corinthians 12 and was conscious and describes what he learned. He could have actually died himself and his spirit left his body 2 Corinthians 11:25 What is clear is that he was fully conscious and heard "inexpressible things".
How about the thief? How can one experience paradise if one is not conscious? Luke 23:43
Why would Paul prefer to be away from the body (dead) and at home with the Lord if that meant being "conscious of nothing" at all?
Of course, in heaven one is conscious of nothing "under the sun" but fully conscious of heaven.
Blessings,
Stephen