Man and Sin by Piet Schoonenberg (1964) 2.1AS

Summary of text [comment] page 67

[Possibility cannot bring itself into actuality. Potential (firstness) requires a triadic relation (thirdness) in bring it into relation with actuality (secondness).

IF “humans in the image of God” mirrors “the One God of Three Persons”,

THEN sin comes from something else that has entered into the mirror.]