Tuesday, June 23, 2026

Karlfried Froehlich on the Exegetical Tradition about the “keys of the kingdom of heaven” (Matthew 16:19; cf. 18:18) in the Medieval Period

The following comes from:

 

Karlfried Froehlich, “Saint Peter, Papal Primacy, and the Exegetical Tradition, 1150-1300,” in The Religious Roles of the Papacy: Ideals and Realities, 1150-1300, ed. Christopher Ryan (Papers in Mediaeval Studies 8; Toronto: Pontifical Institute of Mediaeval Studies, 1989), 14-16

 

 

A basic lack of the primatial context also characterizes the exegetical tradition about the “keys of the kingdom of heaven” (Matt. 16:19). Again, the major reason may have to be sought in the influence of biblical parallels. In the patristic commentaries, the keys were understood as penitential authority, primarily the priestly power of excommunication and reconciliation. This understanding was nourished by the parallel passages of Matt. 18:18 (“Amen dico vobis, quaecumque alligaveritis super terram, etc.”) and especially John 20:23, where binding and loosing seemed to be explained as the retaining and forgiving of sins.[33] Both texts, however, extended this power beyond the one Peter to all apostles. Thus, exegetes were faced with the fact that “what was bestowed on Peter, was also given to all apostles.” [34]

 

Almost invariably, they discussed the verse in the context of lengthy considerations of penance and of the priestly powers, declarative or effective, in relation to this sacrament. Ludwig H6dl has traced the complicated development through the early scholastic Sentences and the exegetical guaestiones literature; he pointed to the erosion of the priestly power of the keys with the change from public to private penance and from the accent on the forum externum to effective contrition and the forum internum. [35]

 

Since Bede, the plural "keys" were understood as a clavis scientiae and a clavis potestatis - the designation of the first one echoing Luke 11:52 ("Vae vobis legisperitis, qui tulistis clavem scientiae"); the second perhaps derived from the "key of David" (Isa. 22:22; Rev. 3:7). [36] The first, more problematic key was identified as the discretio exercised by the priest who, as Jerome had explained, discerns and pronounces authoritatively about the presence or absence of leprosy, i.e., sin (Luke 17:14; Lev. 14:2f.). [37] Medieval theologians saw difficulties with this concept. They tried to distinguish the clavis scientiae clearly from the main key which had to be at least the authority to excommunicate, if not to impose and remit penances. But can scientia really be a key? Can and must every priest be assumed to have discretionary knowledge? And with regard to the power to admit or to exclude from the kingdom: is it simply given with the priestly ordo? Does one not have to add the concept of proper jurisdiction to its exercise? The commentaries on Matt. 16:19 do reflect some of these discussions which led to ever more elaborate revisions of the traditional concept of the keys, including their reduction to a single key.[38] What they show even more clearly is that the weight of the biblical and traditional authorities was still stronger than any pressure for theological accommodation. Exegetes could not leave it at one key only when they discussed Matt. 16:19. [39] On the other hand, the christological accent of v. 18 could make itself felt even in the interpretation of v. 19. To some exegetes, it seemed noteworthy that Christ reserved the key of death and hell to himself (Rev. 1:8); others emphasized that all priestly forgiveness is derived from the one who alone absolves and binds, Christ. In this connection, the reference of Gregory I to John 11:44 was often repeated: Christ alone raised Lazarus; the disciples were only ordered to untie him.” [40]

 

 

 

Notes for the Above:

 

[33] The combination of Matt. 16 and 18 with John 20:23, and the explanation of the power of the keys through the latter passage is not warranted by the biblical text itself. In the early medieval tradition it was developed by Bede in his Homilia 16 on the feast of Peter and Paul (PL 94: 222p-223a). There is patristic precedent, especially in the North African tradition, even though Matt. 18:18 does not seem to have been quoted there before Tyconius ( Beati in Apocalypsin Libri xu; ed. H. A. Sanders, Rome, 1930, p. 86): Cyprian, Epistola 75.16 (Firmilian of Caesarea; CsEL 3.2, pp. 820, 1. 26 - 821, 1.6); De unitate ecclesiae, chapter 4 (long version). Peter Abaelard again attempted to distinguish the ecclesiastical power to excommunicate, given to all apostles and bishops (Matt. 16:19 and 18:18), from a new gift of the Spirit and of forgiveness, bestowed after the Resurrection on worthy apostles and prelates only (Peter Abelard’s Ethics, ed. D. E. Luscombe, Oxford, 1971, pp. 124, 1. 30 - 126, 1. 17).

 

[34] Augustine, Sermo 149.6 (PL 38: 802p): “Petrus enim in multis locis Scripturarum apparet quod personam gestet ecclesiae maxime illo in loco ubi dictum est: Tibi dabo, etc. (Matt. 16:19). Numquid istas claves Petrus accepit et Paulus non accepit? Petrus accepit et Johannes et Jacobus non accepit? Aut non sunt istae in Ecclesia claves, ubi peccata quotidie dimittuntur? Sed quoniam in significatione personam Petrus gestabat Ecclesiae, quod illi uni datum est, ecclesiae datum est.” A good medieval example is Rupert of Deutz, De Trinitate et operibus eius: In IV evangelia XXV De primatu Petri (cccM 23, ed. Hrabanus Haacke, 1972, p. 1813, ll. 1258-1277): “Et tibi dabo claues regni caelorum. Pars iuris caelestis et senatoriae dignitatis, quae subiecta est his verbis: Et quodcumque ligaveris super terram, erit ligatum et in caelis etc. (Matt. 16:19). Ceteris quoque apostolis communiter contradita est. Dixit enim alibi: Amen dico uobis, quaecumque alligaueritis super terram, erunt ligata et in caelo etc. (Matt. 18:18). Itemque et alibi: Quorum remiseritis peccata, remittuntur eis, et quorum retinueritis, retenta sunt (Io. 20:23). Itaque potestas quidem communis est omnium, sed unum et singulare unius est Petri priuilegium, cui prius et singulariter dictum est: Tibi dabo claues regni caelorum”; cf. his Commentary on John, xtv, at 20:23 (PL 169: 8124).

 

[35] Ludwig Hédl, Die Geschichte der scholastischen Literatur und der Theologie der Schliisselgewalt. 1. Teil. Die scholastische Literatur und die Theologie der Schlüsselgewalt von ihren Anfängen an bis zur Summa Aurea des Wilhelm von Auxerre, BGPTMA, Band xxxvill, Heft 4 (Miinster, 1960), esp. pp. 376-391 (“Riickblick”).

 

[36] Bede, Homilia xvi (PL 94: 222): “... absque ea confessione et fide regnum coelorum nullus posset intrare. Claves autem regni coelorum ipsam discernendi scientiam potentiamque nominat, qua dignos recipere in regnum, indignos secludere deberet a regno.”

 

[37] Jerome, Commentarius in Evangelium Matthaei, m, on Matt. 16:19 (PL 26: 122as): “Istum locum episcopi et presbyteri non intelligentes aliquid sibi de Pharisaeorum assumunt supersticio, ut vel damnent innocentes, vel solvere se noxios arbitrentur: cum apud Deum non sententia sacerdotum, sed reorum vita quaeratur. Legimus in Levitico de leprosis, ubi jubentur ut ostendant se sacerdotibus, et si lepram habuerint, tunc a sacerdote immundi fiant (Lev. 14:2-4); non quo sacerdotes leprosos faciant et immundos, sed quo habeant notitiam leprosi et non leprosi, et possint discernere qui mundus, qui immundus sit.” While, in the Middle Ages, Jerome’s sententia could be used to stress the necessity of oral confession, it also pointed to the limits of the priestly powers and provided the warrant for the strong tradition of a merely declarative understanding of absolution.

 

[38] Hdl, Schiisselgewalt, pp. 380f, cites a number of earlier theologians and canonists for this latter position; from the school of Peter the Chanter he mentions Robert of Courson and an anonymous quaestio in an Erlangen Ms (Bibl. univ., Cod. lat. 260). In most instances, the biblical plural is explained as the two usus of the one key of priestly auctoritas.

 

[39] The section from Petrus de Scala’s commentary, In Matthaeum (ll. 44-55) demonstrates not only the general impact of these discussions on an exegete of the late thirteenth century but also the attempt to maintain two keys while actually arguing for one only.

 

[40] Gregory 1, Homilia 26 (PL 76: 1200). The interpretation goes back to Augustine, Tractatus in Ioannem 49.24 (cc 36, p. 431, ll. 22-25); cf. 22.6 (ibid., p. 227, Il. 35-38); Enarrationes in psalmos, C1, sermo 2.3 (cc 40, p. 1440, Il. 7-20).

 

 

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