Spiritus Paraclitus §10

¹⁰ Jerome also insists on the supereminent authority of Scripture. When controversy arose he had recourse to the Bible as a storehouse of arguments, and he used its testimony as a weapon for refuting his adversaries' arguments, because he held that the Bible's witness afforded solid and irrefutable arguments. Thus, when Helvidius denied the perpetual virginity of the Mother of God, Jerome was content simply to reply: Just as we do not deny these things which are written, so do we repudiate things that are not written. That God was born of a Virgin we believe, because we read it. That Mary was married after His birth we do not believe because we do not read it.