The last few years have seen a renewed interest in the study of papyrological remains as a means of shedding light on early Christianity.Footnote 1 To add further evidence to this discussion, I draw attention to two papyri in Yale University's Beinecke Library. In 1997, Yale acquired several papyri from Galerie Nefer in Zürich. The lot contained papyri ranging in date from the Ptolemaic era to the Medieval period. Two of these pieces (both, unfortunately, without specific provenance) appear to be Christian textual amulets.
P.CtYBR inv. 4600: The Lord's PrayerFootnote 2
The first piece (fig. 1) is P.CtYBR inv. 4600, a papyrus copy of the Lord's Prayer that largely matches the version of the prayer in Matt 6:9–13.Footnote 3 The writing of the prayer runs with the fibers (→). The back of the papyrus (↓) is blank. At some point in the modern process of conservation, a large strip of clear tape was applied to the back of the papyrus in the lower left corner and has stained that portion of the papyrus.
P.CtYBR inv. 4600. 9.1 × 15.5 cm. Unknown Provenance. Sixth or seventh century C.E. Courtesy of the Beinecke Rare Book and Manuscript Library, Yale University.

The piece measures 9.1 cm wide by 15.5 cm high. Margins are preserved on the top, left, and bottom. The left margin is roughly 1.0 cm; the top margin is the same. The bottom margin is about 1.5 cm (although a portion of the bottom of the papyrus may have been lost; see below). The height of the letters ranges between 0.4 cm and 1.0 cm.
The hand is practiced, sloping noticeably to the right, and while it shows some affinity to documentary hands, the letters are generally less crowded and better defined than those of documents. The vertical stroke of the η regularly rises above the notional lines, and the vertical strokes of the τ, ι, and κ regularly dip well below the notional lines; all the letters that dip below the notional line (save for ι) show hooks at their bases. The δ has a prominent loop, and ligatures regularly join the combinations αι and ει. The hand of P.CtYBR inv. 4600 is quite similar both in overall character and in individual letter forms to the hand of P.Vindob. G 39736, a letter of 643 C.E., although the latter is much more neatly executed.Footnote 4 A date for the Yale piece in the sixth or early seventh century thus seems likely, although precision in these matters is always difficult.
As is the case with a number of papyrus copies of the Lord's Prayer, the spelling of the Yale piece is barbarous. Plural personal pronouns are misspelled throughout the papyrus; the writer's distinctive η is replaced by υ in these pronouns, occasionally yielding nonsense readings.Footnote 5 A double line mark (=) occurs four times in the papyrus. In three of those instances (lines 5, 6, and 7), the symbol divides sense lines, but it appears misplaced in line 3.Footnote 6
The piece seems to have been folded both horizontally and vertically into a small square of roughly 2.5 cm by 2.5 cm. The right side of the papyrus is broken off at a crease, and a small portion of the bottom of the papyrus may have been lost for the same reason. Papyri with biblical texts that are folded in this way are often identified as amulets, and while the identification of P.CtYBR inv. 4600 as an amulet is not completely certain, it does seem highly likely.
Theodore de Bruyn has identified a cluster of characteristics that are common to papyrus amulets with biblical texts. In addition to evidence of small size (or evidence of folding into a size small enough to wear on the body), he lists the inclusion of petitions or esoteric words, the inclusion of staurograms and other symbols, as well as characteristics that suggest that the text was not written as a literary work, which include “the coarseness of the hand, the irregularity of the orthography, and the presence of peculiar readings.”Footnote 7 A number of factors suggest that the Yale piece should be regarded as an amulet. First, the Lord's Prayer (or portions of it) is known to occur on papyri that are undoubtedly amulets.Footnote 8 Second, although the Yale piece appears to lack any symbols or direct invocations (other than the Lord's Prayer itself) characteristic of many Christian amulets, its poor spelling and nonsense readings suggest that it was unlikely to have been a memory aid (another possible use for papyri with non-continuous biblical texts).Footnote 9 Finally, the blank back confirms that this piece was not part of a codex. De Bruyn has further proposed a fourfold classification for papyri with non-continuous biblical texts: those that are certainly amulets, those that are probably amulets, those that are possibly amulets, and those that are unlikely to be amulets. In this framework, the Yale piece would be in the second class; it is probably an amulet.
Text

NotesFootnote 10
1. πατηρ: Read πάτερ. The vocative πάτερ is frequently misspelled as πάτηρ in papyrus copies of the Lord's Prayer (e.g., P.Duk.inv. 778). Only traces of the ω and ν in ὑμῶν are readable. The ὑμῶν is the first of several misspellings of personal pronouns resulting from the substituion of υ for η. This phenomenon is quite common in Greek manuscripts generally. See Francis Thomas Gignac, A Grammar of the Greek Papyri of the Roman and Byzantine Periods (2 vols.; Milan: Istituto editoriale cisalpino, 1976–1981) 1:264 and 2:165; the opening line of the Lord's Prayer preserved in P.Princ. 2.107 also appears to read πατηρ υμων. There is just sufficient space in the obscured part of the first line for ὁ before the epsilon. This lone ε is a misspelling of ἐν that also occurs at this point in the Lord's Prayer in P.Iand. 1.6 (= P.Giss.Lit. 5.4). The absence of a definite article before οὐρανοῖϛ is, as far as I know, unparalleled in other papyri and the major witnesses to Matt 6:9. The reconstructed οὐρανοῖϛ in the lacuna could just as easily be the singular οὐρανῷ, which is the reading of the Lord's Prayer in the Didache 8:2.
3. κενηθητου: Read γενηθήτω. The substitutions of κ for γ and ου for ω are frequent in papyri (Gignac, Grammar of the Greek Papyri, 1:77 and 1:209–210). In this piece, the substitution of κ for γ also occurs in line 4. The = mark occurs three more times in the papyrus. In lines 5, 6, and 7, the sign marks a division between sense units. Here, however, the mark seems out of place; it would be expected before γενηθήτω.
4. κηϛ: Read γῆϛ. Most witnesses of Matt 6:10 place the definite article before γῆϛ, but several important manuscripts (such as Codex Sinaiticus, Codex Vaticanus, and the Freer Codex) lack the definite article (as does the copy of the prayer in BGU 3.954). Since τὸν ἄρτον begins a new sense unit, one might expect the = mark after γῆϛ, but there is no trace of the symbol.
5. συμερον: Read σήμερον. The same misspelling occurs in the Lord's Prayer preserved in P.Köln 8.336.
6. The personal pronouns in this line are again misspelled.
7. οϕητηϛ: Read ὀϕειλέταιϛ. The partial letter at the end of the line is almost certainly μ (see the μ of ὑμῶν in line 10).
8. πϊρασμον: Read πειρασμόν. In P.Duk.inv. 778, P.Köln 4.171, and P.Köln 8.336, πειρασμόν also lacks the ε. The partial letter at the end of the line is almost certainly κ (the vertical stroke is similar to that of the κ in line 10). If the restoration of
[αί] is in fact correct, it would, as far as I know, be unique in the textual tradition (all other witnesses reading ἀλλά).
9. Once again, the personal pronoun is misspelled. The ο of ἀπό is written above π.
10. το: The opening characters in line 10 are ambiguous. They look similar to the τ and ο in τοῦ of line 9. Yet, in the five certain instances of τ followed by ο in this piece, in lines 2, 3, 4 (twice), and 9, the ο invariably appears to the right of the horizontal stroke of the τ. In line 10, the loop is under the horizontal stroke. If το is the correct reading, two possibilities arise. The letters could be a continuation of the last word in line 9 like [ὀϕειλή] ματα in lines 5 and 6. Or, given our writer's poor spelling, it is possible that the writer has substituted τὸ κυρίῳ for τῷ κυρίῳ. Finally, it is just possible that instead of two letters, there is a single character—the Christian symbol tau-rho. If that is the case, this would be a badly malformed effort. In any event, there is to my knowledge no extant manuscript of the Lord's Prayer that contains this concluding phrase (although a partial inscription of the Lord's Prayer found in Greece at Megara dated to the fourth or fifth century [O.Athens inv. 12227] ends with the vocative [κ]vύριε followed by the tau-rho symbol). Finally, after ὑμῶν, just before the papyrus breaks off, a horizontal stroke is visible; it could either be a letter or perhaps a tau-rho symbol.
P.CtYBR inv. 4710: A Papyrus Amulet with the Symbol ΧΜΓ
The second piece (fig. 2) is P.CtYBR inv. 4710, a narrow strip of papyrus with the symbol ΧΜΓ (chi-mu-gamma) appearing four times in a row on the front of the papyrus (↓); each group of letters has a separate supralinear stroke, and the ink fades from left to right such that the last group is difficult to make out:
The piece is neatly cut on all four edges. It is 33.2 cm long, and it has a height of 4.0 cm on the left side that gradually increases to 5.9 cm on the right side. The back of the papyrus (→) is blank except for a few smudges of ink and what appears to be a single curved line on the narrow end of the piece. The strip was folded in half left to right three times, dividing it into eight roughly equal portions marked by creases. The size of the papyrus and the pattern of folds are quite similar to magical amulets, which is what this piece almost certainly was.Footnote 11
P.CtYBR inv. 4710. 33.2 × 5.9 cm Unknown provenance. Fifth or sixth century C.E. Courtesy of the Beinecke Rare Book and Manuscript Library, Yale University.

The orthography deserves some comment. The script is large (the height of the letters varies between 1.7 and 2.1 cm). The letters all show ligatures, but each instance of ΧΜΓ shows a different ligature between the Χ and the Μ (the ligatures between the Μ and the Γ are consistent).Footnote 12 The hand would not be out of place in the fifth or sixth century, but again, certainty is elusive.
Determining the meaning of the ΧΜΓ symbol has proven difficult for investigators. The bibliography on the symbol is large, but there is little consensus regarding the interpretation of the letters.Footnote 13 In the fourth century, this sequence of letters begins to appear on a wide range of media (papyri, amphora necks, door lintels, statuary, tiles, brick stamps, graffiti) throughout the ancient Mediterranean world.Footnote 14 In papyri, one generally finds ΧΜΓ in two contexts—centered above the first line of documents and letters, and, less frequently, centered above the first line of hymns, prayers, and magical spells.Footnote 15 The Yale piece is somewhat unusual among papyri in its repetition of ΧΜΓ, although the reverse sides of two oracular requests to St. Philoxenus assigned to the sixth century (P.Oxy. 16.1926 and P.Harr. 54) have ΧΜΓ repeated three times interspersed with crosses.Footnote 16
The two leading interpretations regard the symbol as either an acrostic or an isopsephism (that is, a numerical value that corresponds to another word or phrase with an equal numerical value). Those who claim that the symbol is an acrostic usually argue that it abbreviates phrases like Χ(ριστὸϛ ὁ ἐκ) Μ(αρίαϛ) Γ(εvvηθείϛ), Χ(ριστὸϛ) Μ(ιχαὴλ) Γ(αβριήλ), or Χ(ριστὸϛ) Μ(άρτυϛ) Γ(έvηται).Footnote 17 Support for these theories comes in the form of a small number of examples in which the symbol appears to be only partially abbreviated (such as ΧCΜΓ).Footnote 18 Further evidence for interpreting the symbol as an acrostic is provided by what appear to be alternate forms of the symbol, such as ΚΜΓ.Footnote 19 The main drawback to this set of interpretations is the lack of unambiguous attestation for the proposed unabbreviated phrases.
Those who see the symbol as an isopsephism point out that the Greek letters ΧΜΓ have a numerical value of 643 (Χ = 600, Μ = 40, Γ = 3), which corresponds to the numerical value of several Greek phrases. The most popular choice for resolving ΧΜΓ is the phrase θεὸϛ βοηθόϛ (9 + 5 +70 + 200 + 2 + 70 + 8 + 9 + 70 + 200 = 643).Footnote 20 As evidence that ΧΜΓ is an isopsephism, a number of scholars have noted that ΧΜΓ is often paired with
θ(= 90 + 9 = 99), a well-known isopsephism that is equivalent to ἀμήv (1 + 40 + 8 + 50 = 99).Footnote 21 The evidence for resolving ΧΜΓ with the specific phrase θεὸϛ βοηθόϛ is chiefly that this epithet was current from the fourth century onwards.Footnote 22 Also, this phrase seems to have been abbreviated in a less cryptic form (ΘΒ) in a few papyri and inscriptions.Footnote 23 The weakness of this interpretation is that it cannot account for the non-standard occurrences of the symbol (ΧCΜΓ, ΚΜΓ, etc.).
There does not seem to be a great deal of hope for settling the question one way or the other. Given the evidence on both sides of the issue, it appears that the symbol had different meanings at different times and in different geographical areas.Footnote 24 What is clear, however, is that in some media, especially inscriptions, ΧΜΓ frequently occurs in apotropaic contexts. The inscriptions from Syria are illustrative. One of these inscriptions, a door lintel likely dating from the fifth century, reads + ΧΜΓ α + ω Ijη(σοῦ)ϛ βοήθι + (chi-mu-gamma, alpha-omega, Jesus help!).Footnote 25 Another similar piece from the fifth century reads ΧΜΓ Χ(ριστο)ῦ τὸ vῖκοϛ ϕεῦγε σαταvᾶ (chi-mu-gamma, Christ's is the victory. Flee, Satan!).Footnote 26 This type of usage does appear in papyri as well. In addition to P.Oslo 1.5 (see note 15 above), SB 16.12658, a piece identified by its editor as a Byzantine papyrus amulet, reads ΧΜΓ εὐτυχῶϛ ἀγαθῇ τύχῃ (chi-mu-gamma, successfully, by good fortune).Footnote 27 While the letters ΧΜΓ appear in P.CtYBR inv. 4710 with no additional text, the physical properties of the piece that allow for its identification as an amulet provide further evidence for the magical or apotropaic value of the symbol.