Luke 17:24

sn The Son of Man’s coming in power will be sudden and obvious like lightning. No one will need to point it out.

tc Some very important mss (𝔓75 B D it sa) lack the words ἐν τῇ ἡμέρα αὐτοῦ (en tē hēmera autou, “in his day”), but the words are included in א A L W Θ Ψ f1, 13 𝔐 lat sy bo. On the one hand, the shorter reading is impressive because it has some of the best Alexandrian and Western witnesses in support; on the other hand, the expression ἐν τῇ ἡμέρα αὐτοῦ is unusual (found nowhere else in the NT), and may be considered the harder reading. A decision is difficult, but it is probably best to retain the words. NA27 rightly has the words in brackets, expressing doubt as to their authenticity.