The churches shall support or, if possible, maintain an institution for the training for the ministry. The task of the professors of theology is to expound the Holy Scriptures and to defend the sound doctrine against heresies and errors, so that the churches may be provieded with ministers of the Word who are able to fulfil the duties of their office as they have been described above. The churches together are obliged to provide for the professors of theology and for their widows and orphans.