I believe if I had enough faith, I could move mountains, that is, if I could only demonstrate enough faith. I understand I speak ahead of the crowd when I say I do not believe Jesus was speaking only figuratively when He said this.
First there is, to my speculative view, an element of insight that overcomes some. It happens where one is able to see themselves in a brighter & greater and revealing light when someone of emotionally intense significance passes ahead of them. Where does that insight come from, to see oneself so clearly?
It suggests a future life of the spirit, a flash from an embryonic stage, a completing stage, that is the seen world suddenly spiraled into a sudden glimpse of the unseen.