Discovery BoxLuke 3:9 
Context3:9 Even now the ax is laid at the root of the trees, 1 and every tree that does not produce good fruit will be 2 cut down and thrown into the fire.”
Luke 14:35
Context14:35 It is of no value 3 for the soil or for the manure pile; it is to be thrown out. 4 The one who has ears to hear had better listen!” 5
Luke 17:2
Context17:2 It would be better for him to have a millstone 6 tied around his neck and be thrown into the sea 7 than for him to cause one of these little ones to sin. 8
1 sn Even now the ax is laid at the root of the trees. The imagery of an “ax already laid at the root of the trees” is vivid, connoting sudden and catastrophic judgment for the unrepentant and unfruitful. The image of “fire” serves to further heighten the intensity of the judgment referred to. It is John’s way of summoning all people to return to God with all their heart and avoid his unquenchable wrath soon to be poured out. John’s language and imagery is probably ultimately drawn from the OT where Israel is referred to as a fruitless vine (Hos 10:1-2; Jer 2:21-22) and the image of an “ax” is used to indicate God’s judgment (Ps 74:5-6; Jer 46:22).
2 tn Grk “is”; the present tense (ἐκκόπτεται, ekkoptetai) has futuristic force here.
3 tn Or “It is not useful” (L&N 65.32).
4 tn Grk “they throw it out.” The third person plural with unspecified subject is a circumlocution for the passive here.
5 tn The translation “had better listen!” captures the force of the third person imperative more effectively than the traditional “let him hear,” which sounds more like a permissive than an imperative to the modern English reader. This was Jesus’ common expression to listen and heed carefully (cf. Matt 11:15; 13:9, 43; Mark 4:9, 23; Luke 8:8).
6 tn This term refers to the heavy upper stone of a grinding mill (L&N 7.70; BDAG 660 s.v. μυλικός).
sn The punishment of drowning with a heavy weight attached is extremely gruesome and reflects Jesus’ views concerning those who cause others who believe in him to sin.
7 tn Grk “if a millstone were tied…and he were thrown.” The conditional construction in Greek has been translated by English infinitives: “to have… and be thrown.”
8 tn Or “to stumble.” This verb, σκανδαλίσῃ (skandalish), has the same root as the noun σκάνδαλον (skandalon) in 17:1, translated “stumbling blocks”; this wordplay is difficult to reproduce in English. It is possible that the primary cause of offense here would be leading disciples (“little ones”) astray in a similar fashion.
