Résumé :
A Greek codex in the Royal Library of Copenhagen contains two hitherto unknown homilies under the name of Basil of Seleucia ( Against the Heretics on the Trinity and On the creed ). In this article the editio princeps of both these texts is presented, accompanied by a German translation and a commentary. It is demonstrated that the sermons stem, in fact, from the pen of Nestorius and were probably delivered in 428/429. In addition, a careful examination of the creed included in the second sermon shows that it is closely related to the Creed of the Council of Constantinople (381) and was probably composed on the same occasion.
