The word confiance, as the French Protestant Elie Neau uses it in his letters, prayers and hymns written in captivity, is linked to notions of faith and trust in God, with whom Neau enjoys an I~Thou relationship that is the source of his confidence (assurance), in the contemporary sense of the word, and the site where his selfhood is affirmed and legitimated. This paper studies the way this relationship is mediated by Scripture experienced as Word, but moves into mystical transport that is not just union but also ineffable fusion with the divine; furthermore, it also outlines how Neau's resistance to the forces that oppressed him was fed by a meditation on the Passion of Christ that ironically owed much to Catholic popular devotion of the time.