The research aims at exploring the historical contributions of Giidlii Abawrnwa-AlJaw to its period, that is, to the fourteenth and fifteenth century. Inrnaddition, it tries to present philological and linguistic analysis of the GiidL This thesis incorporates six chapters: chapter one introduction, chapter twornhistorical analysis, chapter three philological analysis, chapter fourrnlinguistic analysis, chapter five translation of some selected texts of thernGddl and chapter six conclusion and recommendation.rnChapter one deals with the method I employed in conducting my researchrnin qualitative research, that is, document analysis. Chapter two explainsrnabout the cause of the Stephanite movement. The massive persecution ofrnthis sect most probably happened due to refusal to prostrate to the King,rnZdr'a Ya'~qob. Chapter three provides some philological elements such asrnadiaphoric errors and obelos. Chapter four presents the linguistic changesrnthat exist in the Gddl which is written about 450 years back. There arernphonological, morphological and syntactic changes or problems in thernGddl. In chapter five, I selected some texts deliberately and gavernequivalent translation for them. I did it to let the reader get a brief knowrnhow on the movement. I didn't translate all as it is bulky which is 314rnpages or 162 folios.rnMy conclusion holds that the cause of the Stephanites' persecution wasrnneither political nor economical. In the researcher's view, it was ratherrnreligious. Lastly, recommendations are given.