Paradise: Visions or Delusions?

Were the dreams visions in the night? Or were they delusions. Was it my vivid imagination? Or was it God telling me and warning me of Jesus's imminent return? Was He telling me that my dad is okay? Did He give me a glimpse of His faithfulness? "Then the Angel said to me 'Write: Blessed are those who are invited to the Wedding Supper of the Lamb.' And he added 'these are the true words of God.'" -- Revelation 19:9