Is it an "after death experience" or an "out of body experience" or a "vision" or an "in the Spirit" experience?
I would agree with Paul that it is appointed for everyone to die once and then comes judgment. I do not believe anyone has been raised yet, for the appointed time has not come.
Besides, Christ promised eternal life. If we die and are raised, and then die again, would that not be a contradiction?
But Paul also said....
2 Corinthians 12:2(NAS)
I know a man in Christ who fourteen years ago--whether in the body I do not know, or out of the body I do not know, God knows--such a man was caught up to the third heaven.
And the apostle John wrote the book of revelation saying...
Revelation 1:9-11(NAS)
9 I, John, your brother and fellow partaker in the tribulation and kingdom and perseverance which are in Jesus, was on the island called Patmos because of the word of God and the testimony of Jesus. 10 I was in the Spirit on the Lord's day, and I heard behind me a loud voice like the sound of a trumpet, 11 saying, "Write in a book what you see, and send it to the seven churches: to Ephesus and to Smyrna and to Pergamum and to Thyatira and to Sardis and to Philadelphia and to Laodicea."
It is possible the Lord has sent them visions or the like, and the person in their confusion thinks they have died, when they actually did not. It is also possible that a person was caught into the Spirit like John. However, whether or not the people you are speaking about are speaking in truth, I cannot say. Only God knows. I suppose for each of us, if it does have a purpose in our lives, the Lord will give us ears to hear so long as we are giving our ears to Him.
Here is a question: what if what they say is true? What does that mean for you?
In love,
Blake