Explaining spiritual transformation to someone is like the frog trying to explain to the tadpole what life is like.
"What is it like?", asks the tadpole.
"Well, there's air, and you breathe, and you can jump around out of the water," says the frog.
"But that doesn't sound very solid. You mean you go out of the water into the air. That seems like nothing," says the tadpole.
Similarly, as if a butterfly was trying to explain to the caterpillar what life is like now.