Verse 16 has just issued a command and a promise: walk by the Spirit, and you will certainly not carry out the flesh’s craving. Verse 17 is the ground of that promise (γάρ), and it is built in three moves.

First, a symmetrical statement of hostility: flesh craves against the Spirit, Spirit against the flesh. Second, a general principle stated with a military-legal verb: ταῦτα … ἀλλήλοις ἀντίκειται, these two stand drawn up opposite one another. Third, a ἵνα clause whose meaning is the single most disputed thing in the verse: so that you do not do the things you want.

The difficulty is not lexical but structural. Whose frustration is described? If the clause is telic and the Spirit is the effective agent of the opposition, Paul is saying the Spirit thwarts what the flesh wants — the sentence is a promise. If the clause reports the result of two-sided conflict, Paul is describing a believer caught between two claims and unable to execute either fully — the sentence is an account of experienced tension. Both readings are ancient, both are grammatically defensible, and the choice determines whether Galatians 5:17 is closer in shape to Romans 8:4 or to Romans 7:15–20.

The rendering here therefore keeps the Greek’s own order and reserve: the relative clause stays fronted, the resumptive ταῦτα stays in place, and the ἵνα is rendered ‘so that’ — a phrase that in English carries purpose and result alike, exactly as the Greek conjunction does in Koine.

Both nouns are articular and both function as agents with verbs of desire. That is the first datum: Paul is not contrasting two components of a person but two powers laying claim to a person.

σάρξ keeps the single corpus gloss flesh (§4 concordance). Galatians itself puts the word through the full range — the neutral bodily sense at 4:13–14 (Paul’s illness), maternal descent at 4:23, 29, and here the ethically charged power opposed to the Spirit. One English word must carry all three so the reader can see that Paul used one Greek word. Rendering ‘sinful nature’ would import an anthropological theory and would make 4:13 unreadable.

πνεῦμα is capitalized. The immediate context (v. 16 πνεύματι περιπατεῖτε, v. 18 πνεύματι ἄγεσθε, v. 22 ὁ καρπὸς τοῦ πνεύματος, and above all 4:6, where God sends the Spirit of his Son) makes the Holy Spirit the referent, not a human faculty. The dative πνεύματι of vv. 16, 18, 25 is instrumental-or-spherical of that same Spirit.

The stem is morally neutral in itself — the corpus already fixes ἐπιθυμία as object-determined (‘longing’ where the object is legitimate, ‘craving’ where it is disordered). Here the verb is used absolutely, with no stated object, and its charge comes from the prepositional phrase: what the flesh wants is defined only as against the Spirit.

Rendering craves rather than ‘lusts’ follows the standing decision: modern English ‘lust’ has narrowed almost entirely to sexual appetite, which the vice-list of vv. 19–21 shows is only one item among many. ‘Desires’ is defensible but thin; ‘craves’ keeps the appetitive force without the narrowing.

The present tense is durative — a standing appetite, not an episode. That matters for the promise of v. 16: what Paul says will not be carried out is an appetite that does not go away.

Note that Paul does not hesitate to use the same verb of the Spirit by ellipsis (see below). Whatever discomfort later readers felt about attributing ἐπιθυμεῖν to the Holy Spirit, Paul’s syntax attributes it — and the LXX offers precedent for divine desire-language with this stem (cf. Ps 131:13 LXX of God’s choosing Zion).

The corpus glossary is dense with entries for κατά + accusative (norm, standard, target, quantity). This verse has κατά + genitive, which is a different construction with a different force: hostile opposition, ‘against’ (BDAG κατά A.2.b; cf. Matt 12:30 ὁ μὴ ὢν μετʼ ἐμοῦ κατʼ ἐμοῦ ἐστιν; Acts 19:16; Gal 5:23 κατὰ τῶν τοιούτων).

Two consequences. First, the phrase must never be rendered ‘according to the Spirit’ — that is κατὰ πνεῦμα (accusative), as at Gal 4:29 and Rom 8:4–5, and it means something nearly opposite. Second, the repetition of the same preposition in both limbs establishes the symmetry that the third clause then names: the hostility is mutual, not one-directional.

The repetition is preserved in English with the same word ‘against’ in both limbs. Varying it for style would erase the symmetry that is the whole point of the clause.

τὸ δὲ πνεῦμα κατὰ τῆς σαρκός has no verb. Greek supplies ἐπιθυμεῖ by ellipsis from the first limb; there is no textual doubt about this, and the construction is ordinary.

The rendering keeps the ellipsis: ‘and the Spirit against the flesh.’ Supplying a different verb — ‘and the Spirit opposes the flesh,’ ‘and the Spirit strives against the flesh’ — is a common move and a substantive alteration. It removes from the Spirit the very verb Paul left standing over it, and it thereby dampens the symmetry: two agents, one appetite-verb, mutually directed.

The verb is already fixed in the corpus in its participial substantival use — οἱ ἀντικείμενοι, ‘those who set themselves against’ (Phil 1:28). The finite verb here carries the same domain: a standing, positional opposition, not an incident of friction.

The root image is spatial and military: to lie or be laid opposite. Hellenistic usage covers armies drawn up facing each other, litigants on opposite sides of a case, and logically contradictory terms in Aristotelian analysis (τὰ ἀντικείμενα are the members of a contrary pair). All three resonances suit Paul: the two powers are contraries, they are adversaries at law over the same person, and they are ranged against one another as forces.

ταῦτα is a neuter plural gathering a feminine noun (σάρξ) and a neuter one (πνεῦμα) — regular Greek when a demonstrative sums up disparate items as a pair of ‘things.’ The singular verb with neuter plural subject is likewise regular. The rendering ‘these two’ makes the summing function visible in English without adding a word Paul withheld — ‘two’ is bracketed out of the literal tier for that reason.

ἀλλήλοις is a true reciprocal dative governed by the ἀντί- prefix, and it seals the mutuality: the opposition runs both ways. ‘Are set in opposition to each other’ preserves both the reciprocity and the positional, non-episodic force. Avoid ‘are in conflict,’ which reduces a standing arrangement to a running quarrel.

Proposed — pending reviewHans Dieter Betz, Galatians: A Commentary on Paul's Letter to the Churches in Galatia, Hermeneia, Philadelphia: Fortress, 1979

This is the crux. ἵνα μὴ … ταῦτα ποιῆτε admits at least three construals, and each yields a materially different verse.

(1) Telic, with the Spirit as the effective party. ‘so that you may not do the things you want [to do]’ — where ‘what you want’ means the flesh’s cravings, and the Spirit’s opposition is God’s purpose in preventing their execution. On this reading v. 17 grounds the promise of v. 16 rather than qualifying it, the verse is good news, and Galatians 5 stands with Romans 8 rather than Romans 7.

(2) Result (ecbatic). ‘with the result that you do not do the things you want’ — describing the frustration of a person pulled between two claims: neither the flesh’s program nor the Spirit’s is executed cleanly. Koine ἵνα ranges well past classical purpose into result and content (BDF §391), and the corpus already recognizes epexegetical and result uses.

(3) Telic, with the flesh as the frustrating party. ‘so that you may not do the things you want’ — where ‘what you want’ is the Spirit-given willing (cf. τὸ θέλειν, Phil 2:13), and the flesh’s purpose is to prevent it. This reading takes ἵνα as purpose but assigns the purpose to the flesh, which is grammatically awkward, since the nearest subject of ἀντίκειται is ταῦτα, both parties together.

One further point of syntax: μή is fronted before the relative clause, ahead of ἃ ἐὰν θέλητε, and its scope is formally open. It negates ποιῆτε (‘you do not do them’) rather than θέλητε (‘you do not want them’) — the resumptive ταῦτα ties the negation to the main verb — but the word order means the reader hears the negative first, before learning what is negated. English word order cannot reproduce the effect; the study tier approximates it by placing the negation last for emphasis.

Proposed — pending reviewF. F. Bruce, The Epistle to the Galatians: A Commentary on the Greek Text, New International Greek Testament Commentary, Grand Rapids: Eerdmans, 1982

Three features, all preserved.

ἐάν for ἄν. In Koine the indefinite relative regularly takes ἐάν where classical Greek has ἄν (BDF §107; cf. Gal 6:7 ὃ γὰρ ἐὰν σπείρῃ ἄνθρωπος). This is orthographic-phonetic, not conditional: ἃ ἐὰν θέλητε is ‘whatever things you may want,’ not ‘if you want.’ Some witnesses read ἃ ἄν, which is the same thing normalized to the literary form.

Fronted relative clause with resumptive demonstrative. The object clause stands before the main verb and is then picked up by ταῦτα. The corpus policy on casus pendens applies: preserve both the order and the resumptive pronoun rather than recasting into a single smooth clause. The suspension does rhetorical work — the hearer waits through ‘whatever you may want’ before the verdict lands on ‘these you do.’ Semitic-flavored, abundant in the LXX, and deliberate.

θέλω keeps the fixed gloss want / wish. The corpus note applies with force here: Galatians clusters this verb to set competing wills against each other (4:9, 17, 20, 21; 5:17), and one English root across all of them lets the reader see the cluster. ‘Wish’ would work; ‘desire’ is excluded because it collides with ἐπιθυμέω in the same verse.

Both subjunctives are present, hence durative: an ongoing willing and an ongoing practice, not single acts.

Proposed — pending reviewJ. B. Lightfoot, Saint Paul's Epistle to the Galatians, London: Macmillan, 1865

Two γάρ in one verse, and neither may be dropped (§10 — epistolary connectives are load-bearing).

The first grounds v. 16: the promise that you will not carry out the flesh’s craving rests on the fact that flesh and Spirit are set against each other. The second grounds the first two limbs: the reason each craves against the other is that they are constitutionally contraries. The argument is therefore nested — command (16), ground (17a–b), ground of the ground (17c), consequence (17d).

The δέ in τὸ δὲ πνεῦμα is coordinating rather than adversative. Rendering it ‘but’ would manufacture an antithesis between the two limbs, when in fact the limbs are parallel and the antithesis is between their subjects. ‘And’ is correct.

The verse is textually stable in substance; the variation is orthographic and stylistic.

ἐπιθυμεῖ — attested throughout. A few witnesses transpose the word order in the first clause (κατὰ τοῦ πνεύματος ἐπιθυμεῖ), a stylistic normalization with no semantic effect.

ἃ ἐὰν — the reading of the principal uncials; ἃ ἄν appears in part of the tradition. As noted above, ἐάν for ἄν is standard Koine and the ἄν form is the literary normalization, so ἃ ἐάν is to be preferred as the harder and more idiomatic reading.

ταῦτα (the second, resumptive) — omitted by a scattering of witnesses. The omission smooths a Semitic-flavored redundancy and is precisely the direction scribes move; retain the resumptive pronoun.

ἀντίκειται — universally attested. Some witnesses add ἀλλήλοις after rather than before the verb; the sense is unaffected.

Nothing here bears on the exegetical crux. The dispute over the ἵνα clause is not a textual dispute — every witness reads the same words, and the division is entirely one of construal.

Vulgate: caro enim concupiscit adversus spiritum, spiritus autem adversus carnem: haec enim sibi invicem adversantur, ut non quaecumque vultis illa faciatis. Three things to note. Jerome renders ἐπιθυμεῖ with concupiscit and supplies no verb in the second limb, correctly preserving the ellipsis — the Latin reads spiritus autem adversus carnem with nothing added. His ut non … faciatis keeps the Latin final conjunction, which like Greek ἵνα can shade toward result, so the ambiguity survives the translation.

The long afterlife of concupiscentia as a technical term of Latin theology, however, is reception, not evidence (§11). It may be named; it cannot be used to argue that ἐπιθυμέω here means what concupiscentia came to mean in Augustinian and later scholastic usage.

Old Latin witnesses vary between concupiscit and desiderat, the latter closer to the neutral force of the Greek stem.

Peshitta renders with the root ܪܓ (to desire) in the first limb and supplies a verb in the second, thereby losing the ellipsis; a translational smoothing of the kind the Greek should not be corrected by.

LXX background for the vocabulary: ἐπιθυμέω is the standard equivalent of חמד and אוה, and κατά + genitive of hostile opposition is abundant (e.g. Gen 16:12 of Ishmael). The specific configuration — two personified powers with mutually directed appetites — has no LXX antecedent and appears to be Paul’s own.

Proposed — pending reviewJerome, Commentarii in epistulam Pauli ad Galatas, Corpus Christianorum Series Latina 77A

The verse was a battlefield from early on, and the division is instructive precisely because it is a division inside a shared reverence for the text.

Chrysostom, in his homilies on Galatians, resists any reading that makes the flesh a competing nature. He insists that σάρξ here names not the body but a disposition, and that Paul’s aim is to show the Spirit’s power as sufficient — the antithesis is between two ways of living, and the ἵνα clause describes the Spirit’s restraint of the flesh, not a stalemate in the believer.

Augustine, particularly in the anti-Pelagian writings, reads Galatians 5:17 alongside Romans 7 as testimony to a will genuinely divided under grace, in which the good that is willed is not yet fully performed. This reading, mediated through the Latin concupiscit and ut non … faciatis, became the standard Western construal.

Jerome’s commentary on Galatians registers both possibilities and is characteristically careful not to press the verse into a psychology of the soul’s parts.

What the patristic evidence establishes is not which reading is correct but that the ambiguity is old — as old as the earliest sustained commentary on the letter. It is not a modern invention or a translator’s timidity.

Proposed — pending reviewJohn Chrysostom, Commentary on the Epistle to the Galatians, in Nicene and Post-Nicene Fathers, First Series, vol. 13 · Augustine, De spiritu et littera and Contra duas epistulas Pelagianorum, in Corpus Scriptorum Ecclesiasticorum Latinorum 60

The chapter’s argument constrains the verse in two directions at once.

Against a stalemate reading: v. 16 promises οὐ μὴ τελέσητε, the strongest denial Greek can build; v. 18 says those led by the Spirit are not under law; vv. 22–23 name a harvest the Spirit actually produces; v. 24 says those who belong to Christ crucified the flesh — an aorist, a completed act. None of this reads like a description of paralysis.

Against a triumphalist reading: v. 15 warns of members devouring one another; vv. 19–21 catalogue works of the flesh among people addressed as ἀδελφοί; v. 25 issues a hortatory subjunctive (let us keep in step) rather than an indicative of accomplished fact; v. 26 forbids conceit, provocation, and envy. Paul is not describing a community in which the flesh has ceased to press.

So the verse sits inside a letter that asserts both the Spirit’s decisive sufficiency and the continuing pressure of the flesh, and refuses to relieve the tension. Whatever construal of the ἵνα clause a reader adopts, the surrounding argument forbids using this verse either to license despair about Christian obedience or to deny that the conflict is real and ongoing.

One further note on what the verse does not say. It does not say that flesh and Spirit are equally matched. The verb is ἀντίκειμαι — they stand opposed — not a verb of contest with an indeterminate outcome. The outcome is stated elsewhere: v. 16’s promise, v. 24’s crucifixion, and Gal 6:8’s harvest.

Proposed — pending reviewJ. Louis Martyn, Galatians: A New Translation with Introduction and Commentary, Anchor Bible 33A, New York: Doubleday, 1997