Another Greek word is translated manifest in 2 Thessalonians 1:5Which is a manifest token of the righteous judgment of God, that ye may be counted worthy of the kingdom of God, for which ye also suffer: The word manifest in this verse is endeigma meaning token, evidence, proof. I hope this helps.
Moreover, because a discourse is a body of text meant to communicate specific data, information, and knowledge, there exist internal relations in the content of a given discourse; likewise, there exist external relations among discourses.
Rhetoric is the study of effective speaking and writing. And the art of persuasion. And many other things. In its long and vigorous history rhetoric has enjoyed many definitions, accommodated differing purposes, and varied widely in what it included.