Mark 9:19
Context9:19 He answered them, 1 “You 2 unbelieving 3 generation! How much longer 4 must I be with you? How much longer must I endure 5 you? 6 Bring him to me.”
Mark 13:33
Context13:33 Watch out! Stay alert! 7 For you do not know when the time will come.
Mark 13:4
Context13:4 “Tell us, when will these things 8 happen? And what will be the sign that all these things are about to take place?”
Mark 13:35
Context13:35 Stay alert, then, because you do not know when the owner of the house will return – whether during evening, at midnight, when the rooster crows, or at dawn –


[9:19] 1 tn Grk “And answering, he said to them.” The participle ἀποκριθείς (apokriqeis) is redundant, but the phrasing of the sentence was modified slightly to make it clearer in English.
[9:19] 2 tn Grk “O.” The marker of direct address, ὦ (w), is functionally equivalent to a vocative and is represented in the translation by “you.”
[9:19] 5 tn Or “put up with.” See Num 11:12; Isa 46:4.
[9:19] 6 sn The pronouns you…you are plural, indicating that Jesus is speaking to a group rather than an individual.
[13:33] 7 tc The vast majority of witnesses (א A C L W Θ Ψ Ë1,13 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.
[13:4] 13 sn Both references to these things are plural, so more than the temple’s destruction is in view. The question may presuppose that such a catastrophe signals the end.