The most compelling “prophecy” I know of, a reliable witness, is that of Natan, a 15 year old Jewish athiest boy who died, went to heaven, was taught what is going to happen to Israel, returned to life, went before the Rabbi’s in Jerusalem and retold his story to them.
A note on this video:
I believe it is authentic. The boy does have difficulty describing some things, but he is a kid and what he saw, anyone would have great difficulty describing. So he will speak in a few generalities on some things.