This paper provides the first edition of five previously unknown Greek fragments of Cyril of Alexandria, (Pseudo-)Athanasius, Philoxenos, Severus of Antioch, and Ammonios. Since all these fragments have survived only in the Codex Pantokratoros 28, in the first part of this paper the reader will find some important basic information about the age of this manuscript, its text-critical value and content. The special focus of this introductory part is on the catena commentary on 1 Corinthians which has survived in the Codex Pantokratoros 28 and from which the edited texts are. The main part of this paper presents an edition, translation, and commentary of the five fragments mentioned above. The commentary concentrates on questions concerning the authorship of the texts, their theological content and-insofar it is necessary for the proper understanding of the fragments-text-critical problems.