truth-knower/s, the

English Notes: 

Goblet: 5:58 Those amongst you who have truth-knowledge, do not grieve about those who rashly fall prey to the unknowledge and the untruth; ...

English Description: 

A human being who has knowledge of the truth is a "Wahrheitswissender/e" or a "Wissende/r der Wahrheit" either man or woman!
also possible:
ones who possess knowledge of the truth
ones having/possessing knowledge of the truth

5:58 = Wissende der Wahrheit

German Translation: