Footnotes

1. 16:19 The keys to the kingdom of heaven: the image of the keys is probably drawn from Is 22:15–25 where Eliakim, who succeeds Shebna as master of the palace, is given “the key of the House of David,” which he authoritatively “opens” and “shuts” (Is 22:22). Whatever you bind…loosed in heaven: there are many instances in rabbinic literature of the binding-loosing imagery. Of the several meanings given there to the metaphor, two are of special importance here: the giving of authoritative teaching, and the lifting or imposing of the ban of excommunication. It is disputed whether the image of the keys and that of binding and loosing are different metaphors meaning the same thing. In any case, the promise of the keys is given to Peter alone. In Mt 18:18 all the disciples are given the power of binding and loosing, but the context of that verse suggests that there the power of excommunication alone is intended. That the keys are those to the kingdom of heaven and that Peter’s exercise of authority in the church on earth will be confirmed in heaven show an intimate connection between, but not an identification of, the church and the kingdom of heaven.
2. 16:20 Cf. Mk 8:30. Matthew makes explicit that the prohibition has to do with speaking of Jesus as the Messiah; see note on Mk 8:27–30.
3. 16:21–23 This first prediction of the passion follows Mk 8:31–33 in the main and serves as a corrective to an understanding of Jesus’ messiahship as solely one of glory and triumph. By his addition of from that time on (Mt 16:21) Matthew has emphasized that Jesus’ revelation of his coming suffering and death marks a new phase of the gospel. Neither this nor the two later passion predictions (Mt 17:22–23; 20:17–19) can be taken as sayings that, as they stand, go back to Jesus himself. However, it is probable that he foresaw that his mission would entail suffering and perhaps death, but was confident that he would ultimately be vindicated by God (see Mt 26:29).
4. 16:21 He: the Marcan parallel (Mk 8:31) has “the Son of Man.” Since Matthew has already designated Jesus by that title (Mt 15:13), its omission here is not significant. The Matthean prediction is equally about the sufferings of the Son of Man. Must: this necessity is part of the tradition of all the synoptics; cf. Mk 8:31; Lk 9:21. The elders, the chief priests, and the scribes: see note on Mk 8:31. On the third day: so also Lk 9:22, against the Marcan “after three days” (Mk 8:31). Matthew’s formulation is, in the Greek, almost identical with the pre-Pauline fragment of the kerygma in 1 Cor 15:4 and also with Hos 6:2, which many take to be the Old Testament background to the confession that Jesus was raised on the third day. Josephus uses “after three days” and “on the third day” interchangeably (Antiquities 7:280–81; 8:214, 218) and there is probably no difference in meaning between the two phrases.