David. R. Goodworth explores saying 1.18/Th19 from his book 'The Gospel of Thomas: Evolution'.

“Blessed is the one who came into being before they came into being. If you should be my disciple and listen to my words, these stones will minister to you. For there are five trees in Paradise which are undisturbed summer and winter, and their leaves do not fall. Those who know them will not taste death.”