The authorship of the twenty-nine lines following line 1664 of Cynewulf's Christ in the Exeter Book is, in common with that of much Old English poetry, disputed. The lines are variously considered an independent poem, the conclusion of Christ, and the beginning of Guthlac. Since external evidence is, of course, entirely lacking, an effort will here be made to decide the authorship by means of internal evidence.
The thought contained in Christ IV, as the disputed lines 1665–93 will for convenience be designated in this article, is much closer to that of the concluding passage of Christ III than it is to the beginning of Guthlac. Thomas Arnold has said that the line of thought of IV agrees in no way with that which marks the opening of Guthlac, while Gollancz, who insists that IV is a prelude to Guthlac, finds it necessary to say that the ‘motives’ of IV are ‘derived from the concluding portion of the Christ.’