I seem to recall reading or hearing about a cloud like that being seen at the Azusa Street Revival, which also had an influence on the COG denomination. (I believe I remember a Brother Cashwell attending.) I also remember reading about people seeing fire, including claiming to see fire on the building and the fire department being called. IMO, some people can have a weird idea of what is 'Biblical.' God created all of us and He is smart and creative, and He has His own will. Where does the Bible teach that God is not allowed to do something unless He specifically tells us He will do it in the Bible, or has done the exact same thing before and recorded it in the Bible. Had God ever used anyone to open the eyes of the blind before Jesus did it? Had God ever had anyone split a body of water apart before Moses did it? That doesn't make Moses doing such a thing wrong. There are some things people claim are from God that go against what He has revealed to us, that we can reject. If someone claimed the Lord was appearing and telling people to go worship some false god at a Hindu temple, we know better. That's an example of something that is unbiblical.There is actually an example of a cloud appearing in the temple in the Old Testament. A voice also spoke out of the cloud at the transfiguration. That doesn't mean someone who claims to see a cloud at a church meeting really saw the same sort of thing, but it doesn't mean they didn't either. As for gold dust appearing, could that be a miracle from God? I don't see any examples of gold dust in the Bible. But I don't see blue jeans in the Bible either. The lack of blue jeans in the Bible doesn't mean God couldn't direct me to go buy someone a pair of blue jeans. Who are we to say that God wouldn't, couldn't, or won't make real gold dust appear or something that looks like it? I don't have a right to make such a pronouncement. That doesn't make all claims true. But claiming gold dust appeared as some kind of miracle isn't against anything in the Bible, and God is sovereign, so we need to keep that in mind.How about Christians falling backwards when you lay hands on them. Where is that in the Bible? OTCP, show me the belt jerk in the Bible. Is that Biblical