The Good, the Bad and the Ugly Fruit
The second and most complex picture of contrasting responses to the Kingdom is found in 7:15–23. The vivid imagery of this section is drawn from both animal (7:15) and plant (7:16–20) life and is meant to portray the false prophets who endanger the journey of the disciples (cf. Luke 6:43–44). The section begins with the general warning of 7:15, which compares the deceptiveness of the false prophets (cf. 24:11, 24) to vicious wolves (cf. John 10:12; Acts:20:29) that somehow appear as sheep (10:16; 25:33; cf. Ps 78:52).
Can you pick grapes from thornbushes, or figs from thistles? The plant metaphor continues in 7:16b with a rhetorical question that highlights the folly of expecting harmful weeds to produce beneficial fruit. These false prophets are in some sense part of the community of the disciples, since they call Jesus “Lord” and minister in his name (7:21–22; cf. 10:16; 24:11, 24).
Disciples (good trees) repent and obey Jesus (good fruit). Others (worthless trees) turn away from God and his Kingdom and live accordingly (bad fruit).
The problem is not that there is no fruit, but that the fruit is counterfeit, though the false prophets claim it is genuine (cf. 13:24–30, 36–43, 47–50; 24:23–28). Only those who do the Father’s will (6:10; 12:50; 21:28–32; 26:42) will enter the Kingdom.