The True Cross and Relics

Among the works of Saint Cyril of Jerusalem stand some of the earliest datable testimonies to the relic of the True Cross venerated at Jerusalem and to its dispersal in fragments throughout the world. Preaching around the year 350 over the very rock of Golgotha, Cyril appeals again and again to the wood of the Cross as a present and visible witness; and in his Letter to Constantius he reports the apparition of a luminous cross of light over the city in 351. This file sets out what these texts attest, reported as Cyril’s own testimony rather than as adjudicated historical fact, and notes his silence on the later Helena-finding legend.

Tradition: Pan-Orthodox (Church Father)

The Wood of the Cross at Jerusalem

Cyril preached his Catechetical Lectures in the great basilica complex that Constantine had raised over Golgotha and the tomb of Christ, and he repeatedly invokes, as standing within reach of his hearers, the wood of the Cross preserved at that site. The appeal recurs across the corpus. Confuting those who might doubt the crucifixion, he answers that the place itself and its relic refute them: “He was truly crucified for our sins… and if I should deny it, this Golgotha confutes me, near which we are now assembled; the wood of the Cross confutes me, which from this place has now been distributed piecemeal to all the world” (Catechetical Lecture 4.10; trans. NPNF II/7). The argument is not from authority alone but from a tangible thing his catechumens could see.

He returns to the relic when expounding the title “the Only-begotten”: “the holy wood of the Cross bears witness, seen among us to this day, and from this place now almost filling the whole world, by means of those who in faith take portions from it” (Catechetical Lecture 10.19). And in the lecture on “crucified and buried” he makes the same gesture once more, summoning Golgotha and the wood as a chorus of witnesses to the saving Passion (Catechetical Lecture 13.4). Reported per the repository’s attestation protocol (see METHODOLOGY §3.5), these passages do not establish the relic’s authenticity; what they establish, and establish firmly, is that Cyril testifies — as a contemporary, on the spot, around 350 — that the Church of Jerusalem possessed and venerated wood honored as the Cross of Christ.

Among the Earliest Datable Witnesses

What gives Cyril’s casual appeals their weight is their date and manner. The Catechetical Lectures are securely placed about 350, early in his ministry; Cyril does not announce the relic as a novelty or argue for its discovery, but invokes it in passing, as a thing his hearers already know and can verify by sight. A relic spoken of so matter-of-factly must already have been established at Jerusalem for some appreciable time. This makes Cyril among the earliest datable literary witnesses to the relic of the Cross and to the veneration of it at the holy place (Drijvers, Cyril of Jerusalem: Bishop and City, Brill 2004; Drijvers, Helena Augusta, Brill 1992).

Equally striking is his testimony to dispersal. Twice he says that the wood has been distributed “piecemeal to all the world” and is “almost filling the whole world” through those who “in faith take portions from it” (Cat. 4.10; 10.19). Reported as his testimony, this attests that already by mid-century the practice of detaching and carrying off fragments — the trade and gift of relics that would, within a generation, make portions of the Cross a familiar feature of Christian devotion from Gaul to Cappadocia — was under way at Jerusalem. Cyril is thus an early witness not only to the relic but to its diffusion. Later writers corroborate the practice: by the 380s the pilgrim Egeria would describe the deacons guarding the wood at the Good Friday veneration precisely because a pilgrim had once bitten off and stolen a piece (Egeria, Itinerarium 37; trans. Wilkinson, Egeria’s Travels).

Cyril’s Silence on the Helena Legend

It is essential to mark what Cyril does not say. He nowhere narrates an inventio crucis — a finding of the Cross — and he nowhere mentions the empress Helena, mother of Constantine, whose name the developed legend would attach to the discovery. He treats the wood simply as present at Jerusalem; how it came to be there he does not relate. This silence is significant for the history of the legend. The fully formed story in which Helena, on pilgrimage to Jerusalem, unearths three crosses and identifies the true one by a miracle of healing is later than Cyril: it surfaces in the 390s in Ambrose (De obitu Theodosii 40–47), in Rufinus, and in the church historians of the following century, and it develops further in the Syriac Judas Kyriakos and Protonike recensions (Drijvers, Helena Augusta, Brill 1992).

The repository follows the attestation protocol here (see METHODOLOGY §3.5): Cyril’s testimony — that wood honored as the Cross was venerated and distributed at Jerusalem around 350 — is reported as a c.350 witness, and the question of how the relic was discovered, together with the role assigned to Helena, is reported as a later legendary development whose growth scholarship has traced, not as a fact Cyril attests. That Cyril, preaching on the site itself, knows the relic but not (or at least not the developed) finding-narrative is one of the data points by which historians date the Helena legend after his lifetime (Drijvers, Cyril of Jerusalem: Bishop and City, Brill 2004). Cyril is the witness to the relic; the legend of its finding is the work of a later age.

The Luminous Cross of 351

The second great relic-and-wonder text of the Cyrilline corpus is the Letter to Constantius (Ad Constantium), addressed to the emperor Constantius II. Cyril reports that on the seventh of May 351 — the nones of May — about the third hour of the day, a vast cross of light appeared in the sky over Jerusalem. He describes it as stretching from holy Golgotha to the Mount of Olives, shining more brightly than the sun, and beheld not by one or two but by the whole population of the city, who ran together to the church in awe and praise (Letter to Constantius 3–4; trans. in McCauley & Stephenson, FOTC 64; Yarnold, Cyril of Jerusalem, Routledge 2000).

Cyril’s purpose in writing is not merely to relate a marvel. The letter has a doctrinal and exhortatory aim: addressing an emperor who leaned toward the Arian party, Cyril presents the heavenly cross as a sign of God’s favor upon the orthodox faith and upon the empire, and frames the prodigy within an appeal to the emperor’s piety. Reported per the attestation protocol (see METHODOLOGY §3.5), the apparition is presented here as what Cyril’s letter testifies — a phenomenon he says he and the whole city saw and which he reported to the emperor — not as an adjudicated meteorological or historical event, and not with any claim that the repository can certify what appeared in the sky. What the source establishes is the testimony and its early date, not the physics of the sign.

The Letter and Its Reception

The Letter to Constantius is generally accepted as an authentic work of Cyril, datable to 351, and it is valued both as a fixed point in his biography — placing him in correspondence with the emperor near the start of his episcopate — and as a witness to the cult of the Cross at Jerusalem so soon after the relic-testimony of the Catechetical Lectures. A minor textual question has been discussed regarding the wording of the letter’s closing doxology, whose phrasing some have thought to bear later, more developed trinitarian language; but this affects at most a clause of the ending and is not generally taken to impugn the authenticity of the letter as a whole (Yarnold, Cyril of Jerusalem, Routledge 2000; McCauley & Stephenson, FOTC 64).

The apparition entered the liturgical memory of the Church: the Orthodox calendar commemorates the Appearance of the Sign of the Cross over Jerusalem on May 7, keeping the day Cyril names. Taken together with the Catechetical Lectures, the Letter shows the Cross standing at the devotional center of Cyril’s Jerusalem — as a relic venerated and shared from the holy place, and as a sign written across the sky above it. Both belong to the same world of “holy things on holy ground” that shaped the stational worship of the city (see The Jerusalem Liturgy), and both are reported here as the testimony of an early and well-placed witness, reverently received within the Church and soberly handled by the historian.

References

Cyril of Jerusalem. Catechetical Lectures (Catecheses ad illuminandos) 4, 10, 13. PG 33.331–1181. English: The Catechetical Lectures of S. Cyril, trans. Edwin Hamilton Gifford, NPNF Series 2, Vol. 7 (NPNF II/7).
Cyril of Jerusalem. Letter to Constantius (Epistula ad Constantium imperatorem). PG 33. English in McCauley, Leo P., and Anthony A. Stephenson, The Works of Saint Cyril of Jerusalem, Vol. 2, Fathers of the Church 64 (Washington, DC: Catholic University of America Press, 1970); and Yarnold, Edward, Cyril of Jerusalem, The Early Church Fathers (London: Routledge, 2000).
McCauley, Leo P., and Anthony A. Stephenson. The Works of Saint Cyril of Jerusalem, Vols. 1–2. Fathers of the Church 61 and 64. Washington, DC: Catholic University of America Press, 1969–1970.
Drijvers, Jan Willem. Cyril of Jerusalem: Bishop and City. Leiden: Brill, 2004.
Drijvers, Jan Willem. Helena Augusta: The Mother of Constantine the Great and the Legend of Her Finding of the True Cross. Leiden: Brill, 1992.
Egeria. Itinerarium (Travels). Trans. John Wilkinson, Egeria’s Travels. 3rd ed. Warminster: Aris & Phillips, 1999.