This grouping of witnesses is peculiar. (c) may be ruled out as a Syrian emendation; cf. 1Co 11:31. (b) makes a rather difficult sense (see Expos. Note); and with cop and Harclean syr testifying in its favour, and G and the latt against it, the δε can hardly be a Western addition. Moreover Δε before λεΓωϲΙΝ might easily escape the eye of the copyist; cf. δε δοκιμαζετε, 1Th 5:21, and note.
For αιφνιδιος AD*G read, itacistically, εφνιδιος.
επισταται in אB 17 37, against the εφισταται of DKP, &c.; see Expository Note.