There is much textual uncertainty regarding the Lukan version of the prayer scene in the Garden. To see the matter in context, I give the passage as follows (with the disputed portion in double-square brackets, according to the Nestle-Aland critical text [27th ed.]):
40geno/meno$ de e)pi tou= to/pou ei‚pen au)toi=$: proseu/xesqe mh ei)selqei=n ei)$ peirasmo/n. 41kai au)to$ a)pespa/sqh a)p’ au)tw=n w(sei li/qou bolh/n kai qei$ ta go/nata proshu/xeto 42le/gwn: pa/ter, ei) bou/lei pare/negke tou=to to poth/rion a)p’ e)mou=: plhn mh to qe/lhma/ mou a)lla to son gine/sqw. [[43w&fqh de au)tw=| a&ggelo$ a)p’ ou)ranou= e)nisxu/wn au)to/n. 44kai geno/meno$ e)n a)gwni/a| e)ktene/steron proshu/xeto: kai e)ge/neto o( i(drw$ au)tou= w(sei qro/mboi ai%mato$ katabai/nonto$ e)pi thn gh=n.]] 45kai a)nasta$ a)po th=$ proseuxh=$ e)lqwn pro$ tou$ maqhta$ eu!ren koimwme/nou$ au)tou$ a)po th=$ lu/ph$, 46kai ei‚pen au)toi=$: ti/ kaqeu/dete; a)nasta/nte$ proseu/xesqe, i%na mh ei)se/lqhte ei)$ peirasmo/n.
40And coming to be upon the place, he said to them: “Pray not to enter into testing.” 41And he drew out from them like a stone’s throw (away), and setting (down) the knees he prayed, 42saying: “Father, if you wish, carry away this cup from me, but more—(let) not my will but yours come to be.” [[43And a Messenger from heaven was seen (by/unto) him, strengthening him. 44And coming to be in agony, more fervently he prayed: and his sweat came to be like thick-drops of blood going down upon the earth.]] 45And rising from the prayer, coming to(ward) the learners he found them sleeping from sorrow, 46and he said to them: “What, you are asleep? Stand up (and) pray not to come into testing.”
Commentators and textual critics are divided on whether the bracketed portion (vv. 43-44) should be considered as part of the original text. Indeed, the external (manuscript) evidence is rather evenly divided:
- Manuscripts Ë69 (apparently), Ë75, aa, A, B, N, R, T, W, 579, family 13 mss, etc., as well as a number of key early translations (Syriac, Coptic, Armenian, etc.) and a number of Church Fathers (such as Origen and Clement of Alexandria), do not include vv. 43-44. A number of additional manuscripts include the verses but mark them with asterisks as suspect.
- Manuscripts a*, D, K, L, X, G, D, 565, family 1 mss, etc., along with key translations (Syriac, Coptic, Latin, etc.), and a number of Church fathers, do include the verses.
To judge by some of the best/earliest Alexandrian manuscripts, a slight edge would be given to the shorter text, as well as on the basis of lectio brevior potior (“the shorter reading is [generally] to be preferred”). However, it is hard to say which is the more difficult reading. Did scribes add the verses, perhaps to help combat “docetic” Christologies by emphasizing the suffering of Jesus? Or, did scribes delete the verses, because they seemed to give too much emphasis on the human suffering of Christ? It is always easier to explain how such variants were preserved in the manuscripts, than to explain how they first came about.
In any event, the change, whichever direction it occurred (add or omit), must have taken place before the end of the second-century, since late-second- and early-third-century witnesses attest both forms of the text. Vv. 43-44 clearly represent an ancient tradition—early Church Fathers like Justin Martyr (see the Dialogue with Trypho c. 103) cite it, though not specifically as coming from the Gospel of Luke.
On the whole, the text-critical evidence appears to be slightly in favor of the shorter reading. So cherished and familiar are vv. 43-44, however—and such a powerful ancient tradition—that even scholars who reject them as original still feel compelled to include them (bracketed, as in the Nestle-Aland text above) and to comment upon them.