3. καυθήσωμαι. So CK. Tischendorf reads καυθήσομαι with DEFG. Westcott and Hort read καυχήσωμαι with אAB. We must choose between one or other of the two latter readings. So great a solecism as a future subjunctive must have been the error of the copyist, probably due to his writing from dictation. The former of the two seems preferable.