I was wondering what the Jewish belief was on life after death, particularly what happens to us.
I looked into the subject of soul sleep and I assure you that it's not biblical. I shared the following on another forum and I hope you'll find it helpful.
Soul sleep refers to the idea that when we die, our souls cease to exist or at least "fall asleep" and become totally inert, until the resurrection.
However, in Matthew 17:1-5 NKJV, we read:
Now after six days Jesus took Peter, James, and John his brother, led them up on a high mountain by themselves; and He was transfigured before them. His face shone like the sun, and His clothes became as white as the light. And behold, Moses and Elijah appeared to them, talking with Him. Then Peter answered and said to Jesus, “Lord, it is good for us to be here; if You wish, let us make here three tabernacles: one for You, one for Moses, and one for Elijah.” While he was still speaking, behold, a bright cloud overshadowed them; and suddenly a voice came out of the cloud, saying, “This is My beloved Son, in whom I am well pleased. Hear Him!”
Now, this was kind of difficult for Moses to do if he was "dead" in his grave, still waiting to come to life again through Christ Jesus, don't you think? Moses died; yet, he showed up at the Mount of Transfiguration. Was he not sleeping? Some may argue that God had resurrected Moses, however, the scriptures tell us that Jesus is the first to have been raised from death – never to die again. All others before him who had been broth back to life died. Thus, Moses showed up with Elijah while he had not yet been resurrected. That in itself proves that the doctrine of soul sleep is false.
Still not convince? Not a problem… The scriptures are rich.
Revelation 6:9-10 NKJV
When He opened the fifth seal, I saw under the altar the souls of those who had been slain for the word of God and for the testimony which they held. And they cried with a loud voice, saying, “How long, O Lord, holy and true, until You judge and avenge our blood on those who dwell on the earth?”
The bible is saying that martyrs go to heaven before the judgment. Note that this takes place before the resurrection, before the end of the world, before the judgment, while life is going on as usual on the earth. Also, the martyrs, despite being "dead", have their own memories, and remember that they have been martyred. So to say that these martyrs "know nothing" (Ecclesiastes 9:5) in the sense of being unconscious, or something like that, would be incorrect. As a matter of fact, Ecclesiastes is simply a book of Hebrew poetry and should not be taken literally. It’s also simply a book of mans lamentations. Some who take this book literally have wondered from the faith and have come to believe that God (The Son) was created.
Moving on…
2 Corinthians 5:8 (New King James Version)
We are confident, yes, well pleased rather to be absent from the body and to be present with the Lord.
In other words, to be absent from the body is to be present with the Lord. Now, you would have to admit that those who have passed on are at home with the Lord, and what’s more, that they haven’t simply vanished into nothingness. Thus the word "sleep" in this context is intended to apply to our physical bodies.
Paul also said in Philippians 1:21-23, “For to me, to live is Christ and to die is gain. If I am to go on living in the body, this will mean fruitful labor for me. Yet what shall I choose? I do not know! I am torn between the two: I desire to depart and be with Christ, which is better by far;
If Paul died he would "depart." Where would he go? He says he would go to be with Christ. Where is Christ? In heaven. Was Paul only speaking of the resurrection at which time he would be with Christ? No, because there will be no departing to be with Christ at the resurrection.
Revelation 13:6 NKJV
Then he opened his mouth in blasphemy against God, to blaspheme His name, His tabernacle, and those who dwell in heaven.
So those who have fallen asleep (meaning their bodies) are dwelling in heaven, at home with the Lord. Present and completely aware of their surroundings!