This study determines, from a doctrinal view, the date of the origin of Hus’s Quaestio de testimonio fidei christianae as, at the earliest, in the year 1408, and it displays in particular detail Hus’s teaching and its sources in this regard. Among these sources belong on the one hand the texts of Hus’s teacher Stanislav of Znojmo, on the other hand the texts of John Wyclif. It is the tracts of these two that allow one to reconstruct the doctrine of Hus’s standpoint. It is shown that Hus, like Stanislav and Wyclif, was a proponent of the dual creation of universals, that is by a pure act of God and by a pure potential in the sense of first matter. Hus addressed this quaestio in a theological context, or more exactly in the context of Christian faith, although his vocabulary preserves the semblance of philosophical language. Hus clearly sought, in this quaestio, to say that human reason is not capable of knowing universals, but that universals were revealed in scripture (Gen 1,21-25), and therefore every Christian must recognise their existence on the basis of faith.