2 Corinthians 12: 1-4
1: It is not expedient for me doubtless to glory. I will come to visions and revelations of the Lord.
2: I knew a man in Christ above fourteen years ago, (whether in the body, I cannot tell; or whether out of the body, I cannot tell: God knoweth;) such an one caught up to the third heaven.
3: And I knew such a man, (whether in the body, or out of the body, I cannot tell: God knoweth;)
4: How that he was caught up into paradise, and heard unspeakable words, which it is not lawful for a man to utter.
Revelation 4: 1-2
1: After this I looked, and, behold, a door was opened in heaven: and the first voice which I heard was as it were of a trumpet talking with me; which said, Come up hither, and I will shew thee things which must be hereafter.
2: And immediately I was in the spirit: and, behold, a throne was set in heaven, and one sat on the throne.
Revelation 21: 9-10
9: And there came unto me one of the seven angels which had the seven vials full of the seven last plagues, and talked with me, saying, Come hither, I will shew thee the bride, the Lamb's wife.
10: And he carried me away in the spirit to a great and high mountain, and shewed me that great city, the holy Jerusalem, descending out of heaven from God,
God's people were caught up in the Spirit, it was God or his angels who prompted it but in occultic astral/soul travel, it's people who are seeking after the experience. Those who practice astral travel do just that, practice it, seek after it, and are taught it from a book, course or others.
The difference being that of the Holy Ghost while the other is controlled by spirits that are not of God. An OBE not controlled by the Holy Ghost is dangerous but so is any spiritual experience outside of God's leadership. Without the Holy Ghost leading us there is nothing stopping evil spirits from coming in to invade people.
God knows our hearts and when the desire for power becomes more important then his will, it is not of God.
As far as the other/lost books spoke of here, they have been deemed forgeries. A big deal has been made about the 66 books in the Bible which it should be noted that it's NOT the 666 books of the Bible. Satan and his agents will have to find a lot more of the so called lost books before making that assertion.
I find it amazing that people can't see past the "other books" or the doctrines of men. Satan has been changing God's word since the garden of Eden which most fail to see and to learn from.
Love In Jesus Christ
Justice