‘Rest’ gives the impression of non-movement and so a sense of finality. ‘Running in Paradise’ definitely conveys an afterlife that is enjoyable and carefree.
I ought probably be classified as a ‘hostile commentator’. It is a term that I recently came across in The Holy Wells of Ireland by Patrick Logan applied to non-Catholic or non-believing observers of the traditions and patterns – but their commentaries were considered more independent and so in some ways more reliable. As an agnostic, I probably qualify as hostile.
But sometimes even this hostile commentator wonders if it would be better to hope to be a butterfly flying free or of running in paradise.