Mark 13:33

Watch out! Stay alert! ¹  For you do not know when the time will come.

Mt 24:42-44; Mt 25:13; Mt 26:40,41; Mr 13:23,35-37; Mr 14:37,38; Lu 12:40; Lu 21:34-36; Ro 13:11,12,14; 1Co 16:13; Eph 6:18; 1Th 5:5-8; Heb 12:15; 1Pe 4:7; 1Pe 5:8; Re 3:2; Re 16:15

¹ tc The vast majority of witnesses (א A C L W Θ Ψ Ë^1,13 Ï lat sy co) have καὶ προσεύχεσθε after ἀγρυπνεῖτε (agrupneite kai proseucesqe, “stay alert and pray”). This may be a motivated reading, influenced by the similar command in Mark 14:38 where προσεύχεσθε is solidly attested, and more generally from the parallel in Luke 21:36 (though δέομαι [deomai, “ask”] is used there). As B. M. Metzger notes, it is a predictable variant that scribes would have been likely to produce independently of each other (TCGNT 95). The words are not found in B D 2427 a c {d} k. Although the external evidence for the shorter reading is slender, it probably better accounts for the longer reading than vice versa.