Occasion. The twenty-third disputation of the fourth Leiden cycle, defended 21 December 1605 under Arminius by Richardus Ianus Neraeus, the same student who defended the disputation on the essence of God in 1607. Its preface places it after "some earlier disputations" on Christ, his offices, his humiliation, exaltation and merit; in the Syntagma it is followed by the disputation on justification. It is the first of the corpus's two disputations De Fide; the second (Stanglin XXXIX) is a different text under a different respondent.
Authorship. By the convention of the Leiden faculty the theses are the presiding professor's; the student defended them. Stanglin argues the case for Arminius's authorship of the disputations at length, and it is his argument, not ours.
The doctrinal move. Arminius first sorts fifteen senses of the word faith and fixes the last (I). He then runs faith through the causes: the efficient cause, principal and instrumental (II–VII), the object, common and proper (VIII–X), the subject (XI–XII), the form (XIII) and the end (XIV). He closes with how believers know they have faith (XV) and what is contrary to it (XVI). A corollary affirms that the faith of the fathers was one in substance with ours.
Where it is answered. No answer by Gomarus or in Wesley is identified for this disputation. Its own polemic faces Rome: the margins of Theses X and XIII name Bellarmine, Fisher of Rochester, the Rheims annotators and Báñez.