Ancient narrators sometimes contrasted positive and negative moral examples; as Judas contrasts with Peter in 26:69—27:10, he contrasts here with the extravagant love of the woman in 26:6-13. Jesus has continued to discuss his death (vv. 2, 12), and perhaps at least Judas has now caught on. But when Judas finds that Jesus' kingdom will not profit him materially (and may even cost him his life), he chooses to get what he still can from his lengthy investment in Jesus: he sells him for the price of a slave (v. 15; Ex 21:32). Like another disciple of old (2 Kings 5:26-27), Judas abandoned his spiritual birthright for better material conditions, and in saving his own life lost it for eternity (Mt 16:24-27; 27:1-10). Judas represents all those who follow Jesus only for what they can get from him, not for how they can serve him: eventually they may decide that the cost of serving him is higher than it is worth.