A university entrance qualification, such as a general secondary school leaving certificate, is required for admission onto the study programme.
More information on university entrance qualifications can be found here.
The study programme is taught in German. You must therefore have a very good command of German at the start of the study programme.
Further language skills except German:
Latin proficiency (Latinum) and Greek proficiency (Graecum) or Latin proficiency and Hebrew proficiency (Hebraicum) plus knowledge of Greek. Students must submit evidence of their language skills (except German–see above) when registering the subject of their bachelor’s thesis at the latest.