Transcend is a word used in the SolSeed Movement in a sense that is not supernatural but which simply indicates that something is exceeding its own boundaries. The phrase, 'Cells transcend themselves' from the opening words of Viriditas de Terra talks about unicellular creatures becoming multicellular. This process did not involve more cells being created and added to the unicellular creature from outside. The process was one of cell division and adhesion. One cell literally learned to become a many celled creature by exceeding what had been its behavioural limits.
Likewise, in the phrase, 'Empathy is transcendent' from the SolSeed Creed, the reference is to the idea that, when we empathize, we use our imaginations and actions to exceed our selfish selves and reach out and form alliances and support and nurture the other.