It all sounds pretty specific to me. I've been a student of the Bible for many years and have never heard anything like this out of any denomination.
The destruction of millions that take months and months to bury on the plain of Megiddo is pretty specific. That everyone must take a mark in their forehand and hand is also specfic, I did not imagine that, nor the parts saying the earth will be burnt with fire, a meteor will descend and poison the earth, etc. These are all specfic claims that will reveal the prophecy of the Lord.
There is something called the doctrine of understandibility, where the meaning isn't so cloaked you'd need a PhD to figure it out. The term manifestation has a very New Age ring. The Bible is clear that none of us will be like Him until we pass through death or translation (Enoch, Elijah).