Five Greek words, and probably the most detached verse in the letter. Read in place, it is not a promise of unlimited capability but the closing clause of Paul’s argument about contentment under fluctuating material conditions (vv. 10-12). The πάντα is the same πάντα he has just enumerated: being brought low and abounding, being fed and going hungry. Paul is saying he has been initiated (μεμύημαι, v. 12) into the whole range, and the reason he can hold up under either end of it is the one who keeps putting strength into him.

Three decisions carry the verse:

1. πάντα is an accusative of respect (“for all things”), not an object of a transitive verb (“I can do all things”). ἰσχύω does not take an object of that kind.
2. ἰσχύω means to have strength, to be up to something — not to accomplish it. The distinction is small in English and large in exegesis.
3. ἐνδυναμοῦντί is a present participle: continuous supply. And the manuscript question is whether the text names the supplier (Χριστῷ) or leaves him unnamed. The critical text leaves him unnamed.

Rendered honestly, the verse is stronger, not weaker: it says less about Paul’s range and more about the source of his endurance.

The NA28/UBS5 text reads simply ἐν τῷ ἐνδυναμοῦντί με, with no named agent. A large body of later witnesses adds Χριστῷ: ἐν τῷ ἐνδυναμοῦντί με Χριστῷ.

• Shorter reading (no Χριστῷ): 𝔓⁴⁶, א* A B D* I 33, plus Old Latin and Coptic support. The earliest and most diverse witnesses.
• Longer reading (+ Χριστῷ): א² D² Ψ, the Byzantine majority, and thence the Textus Receptus.

The judgment is not close. Scribal expansion of an unnamed divine agent into an explicit one is one of the most predictable movements in the transmission of the Pauline letters; the reverse — deleting a reference to Christ — has no plausible motive. The longer reading also looks like liturgical smoothing of a clause that ends abruptly on a participle plus pronoun.

The theological content does not change. Paul has just said in 3:9-14 who empowers him, and the participle is masculine singular. What changes is the shape of the sentence: the critical text ends on με, leaving Paul as the object of an unnamed agent’s continuous action. That is more striking Greek, and it is what the earliest manuscripts have.

πάντα is anarthrous accusative neuter plural. Two questions: what case-function, and what scope.

Function. ἰσχύω is not a transitive verb of accomplishment; it means “to be strong, to have capacity.” With an accusative it takes an accusative of respect — strength with reference to something. Compare the same construction in Greek generally with verbs of ability. So: “for all things I am strong,” not “all things I do.” The English “I can do all things” quietly converts a statement of capacity into a statement of performance. That conversion is where the verse’s misuse begins.

Scope. Anarthrous neuter plural πάντα is formally unbounded — the glossary already fixes it as “all things” over against anaphoric τὰ πάντα (“the whole lot just named”). But the fronted position and the immediate context pull hard toward the set enumerated in v. 12: ταπεινοῦσθαι / περισσεύειν, χορτάζεσθαι / πεινᾶν, περισσεύειν / ὑστερεῖσθαι. Paul has just said ἐν παντὶ καὶ ἐν πᾶσιν μεμύημαι — “in every [circumstance] and in all [circumstances] I have been initiated.” The πάντα of v. 13 answers those datives.

What neither reading supports is a promise of success in undertakings of the reader’s own choosing. Even on the broad construal, the domain is endurance and gospel labor, not achievement in general.

ἰσχύω belongs to the ἰσχύς family — bodily or effective strength. BDAG distributes it across “be strong, be powerful” (the stative core), “have power, be competent, be able,” and “be effective, have force” (of a will or a covenant, Heb 9:17; Gal 5:6).

The NT range makes the stative core visible:

• Salt that has lost its savor “is good for nothing” — εἰς οὐδὲν ἰσχύει (Matt 5:13): it has no potency.
• The disciples could not keep watch one hour — οὐκ ἰσχύσατε (Matt 26:40).
• The demoniac was so strong that no one ἴσχυεν to subdue him (Mark 5:4).
• “Faith working through love ἰσχύει” — has force (Gal 5:6).

In none of these does the verb mean “accomplish.” It names the possession of strength adequate to a thing. So Paul’s claim is about sufficiency, matched precisely to αὐτάρκης in v. 11 — he has learned self-sufficiency, and the reason is that he is strengthened, which is the opposite of self-sufficiency and the sting in the argument.

Keep ἰσχύω lexically distinct from δύναμαι (“be able”), from δύναμις (“power,” Phil 3:10), and from ἐνεργέω (“work effectively,” Phil 2:13), all of which Paul uses in this letter.

ἐνδυναμόω = ἐν + δύναμις + causative -όω: “put power into, make strong.” Absent from classical Greek, it appears in the LXX (Judg 6:34 A; Ps 51:9 LXX) and is essentially Pauline in the NT — Rom 4:20; Eph 6:10; Phil 4:13; 1 Tim 1:12; 2 Tim 2:1; 4:17 (plus Acts 9:22 of Saul himself).

Three features carry weight:

The prefix is directional, not merely intensive. Power is put in. The English “strengthen” is accurate but slightly flattens the image of infusion; “empower” recovers it at the cost of a faintly bureaucratic modern ring. Both are defensible.

The tense is present. Not ἐνδυναμώσαντι (“the one who empowered me”) and not a future. Ongoing, repeated supply, aspectually matched to the ongoing conditions of v. 12. Paul is not describing a deposit received but a current being fed.

The voice leaves Paul passive. He is με, the accusative object. The sentence’s only active agent is the unnamed participle. This is the same structural move as Phil 2:13 (θεὸς … ὁ ἐνεργῶν ἐν ὑμῖν) and 1:6 (ὁ ἐναρξάμενος … ἐπιτελέσει), and per the glossary the ἐνεργέω/ἐνδυναμόω domain must stay clear of all “energy” vocabulary, which would import a modern impersonal-force notion (§9).

Compare 2 Cor 12:9-10, where the same theology appears with the δύναμις root and the paradox stated outright: ἡ γὰρ δύναμις ἐν ἀσθενείᾳ τελεῖται.

The prepositional phrase is genuinely open between two senses of ἐν + dative, and the choice is not decorative.

English “in” holds both; “by” or “through” closes the question. Per the standing glossary policy on ἐν Χριστῷ and ἐν κυρίῳ, the preposition is preserved unresolved. Note that the two readings are not really rivals — the participle already supplies the agency, so “in” loses nothing.

On the article: τῷ substantivizes the participle into a title-like designation, “the one who empowers me.” Masculine singular, and in the context of Philippians 3-4 the referent is Christ. The critical text simply does not spell it out.

Verses 10-20 are Paul’s acknowledgment of the Philippians’ gift, and they are famously careful. He rejoices (v. 10), then immediately guards against being read as a solicitor (v. 11, οὐχ ὅτι καθʼ ὑστέρησιν λέγω). He then makes two claims that sound like Stoic commonplaces and are not:

• αὐτάρκης (v. 11) — the Stoic and Cynic technical term for the sage’s self-sufficiency, needing nothing external. Paul takes it and then says he learned it (ἔμαθον), which no Stoic would concede in the same way.
• μεμύημαι (v. 12) — “I have been initiated,” vocabulary from the mystery cults. Perfect tense: an initiation completed, with standing effect.

Verse 13 detonates the whole borrowed apparatus. The self-sufficiency turns out to be sufficiency in another. Paul is αὐτάρκης precisely because he is not αὐτάρκης — the strength is put into him, continuously, by someone else. Read that way, the verse is a polemic against the very ideal it appears to endorse.

Then v. 14 (πλήν — “only”) turns back to thank them anyway. Paul’s independence of circumstance does not make their gift unnecessary; it makes it a fruit credited to their account (v. 17).

The patristic reading is uniformly about endurance, not capability, and uniformly emphasizes the agency of the participle.

Chrysostom (Hom. in Phil. 15) is emphatic that Paul is not boasting: he ties v. 13 directly back to v. 12 and takes πάντα as the two conditions of poverty and abundance, insisting Paul ascribes the whole thing to God — the strength is τοῦ ἐνδυναμοῦντος, not Paul’s own. He notes Paul’s care to avoid the appearance of self-praise in a passage where he has just listed his own attainments.

Theodoret likewise glosses it in terms of divine cooperation (συνεργία) enabling Paul to bear both extremes.

Ambrosiaster and the Latin tradition read omnia possum in eo qui me confortat (Vulgate), which supplies possum — “I am able” — and thereby begins the drift toward the capability reading in the West. Confortat (“strengthens together, invigorates”) for ἐνδυναμοῦντι is good, keeping the infusion sense.

Worth noting: the Vulgate has in eo qui, no name, agreeing with the shorter Greek reading. The naming of Christ in the verse is a later development in the Greek tradition, not the Latin.

Per §6 and §7 the rendering follows the lexical findings and does not shade toward comfort. Three refusals:

1. No “I can do.” ἰσχύω is stative and πάντα is respectival. “I have strength for all things” preserves both. The cost is idiomatic smoothness; the gain is that the verse stops functioning as a warrant for whatever the reader wishes to attempt.
2. No supplied “Christ.” The earliest witnesses leave the agent unnamed. He is named in the note, per §4.
3. No “through.” ἐν stays “in,” per the standing policy, leaving sphere and means both audible.

What remains is a harder and better sentence: a prisoner (1:13), fed irregularly, saying that he is equal to whichever way the conditions fall, because someone keeps putting strength into him. That is not a slogan for achievement. It is a claim about who is holding him up.