Formation
The subjunctive is formed from the verb's relevant tense/aspect stem with subjunctive morphology. In regular thematic paradigms, **lengthened thematic vowels** (ω/η rather than ο/ε) are highly characteristic, together with the appropriate personal endings. For a regular λύω-type verb, the present active forms include **λύω, λύῃς, λύῃ, λύωμεν, λύητε, λύωσι(ν)**, while the first-aorist active forms include **λύσω, λύσῃς, λύσῃ, λύσωμεν, λύσητε, λύσωσι(ν)**. These patterns describe regular thematic formations; athematic, irregular, passive, and perfect subjunctive forms must be identified from their own stems and paradigms. Long-vowel morphology is therefore an important diagnostic, but not a universal one-form test for every subjunctive.
Present Subjunctive
The **present subjunctive** of a regular thematic verb uses the present stem with subjunctive morphology: **λύω, λύῃς, λύῃ, λύωμεν, λύητε, λύωσι(ν)**. Its present-stem formation normally presents the event with **imperfective viewpoint**, without requiring that the event be objectively continuous or ongoing. Some individual forms may be syncretic with indicative forms: for example, **λύω** can be either present indicative 1 sg. or present subjunctive 1 sg. By contrast, **λύωσι(ν)** is morphologically distinct from present indicative **λύουσι(ν)**. Morphology together with syntax and context determines the analysis.
Aorist Subjunctive
The **aorist subjunctive** uses the aorist stem with subjunctive morphology; for the regular first-aorist active of λύω: **λύσω, λύσῃς, λύσῃ, λύσωμεν, λύσητε, λύσωσι(ν)**. It normally presents the event with **perfective viewpoint**. The 1 sg. form **λύσω** is formally identical to the future active indicative 1 sg., but this syncretism does not extend across the whole paradigm; the remaining persons show distinct subjunctive morphology. Syntactic environment and the complete form are therefore essential for identification.
Perfect Subjunctive
The **perfect subjunctive** is rare in the NT. Where it occurs, perfect-stem morphology contributes the semantic profile of the Greek perfect within a subjunctive construction; its interpretation should not be reduced automatically to a single 'resultative' meaning. Perfect subjunctive forms may be synthetic or periphrastic depending on lexeme and construction, while other aspectual choices—including the aorist subjunctive—must be interpreted according to their own morphology and context.
Lengthened Thematic Vowels
In regular **thematic** paradigms, a major morphological marker of the subjunctive is the **lengthened thematic vowel**: ω (rather than ο) and η (rather than ε). Compare λύομεν (indicative) with **λύωμεν** (subjunctive), and λύετε (indicative) with **λύητε** (subjunctive). This is a highly useful diagnostic for thematic forms, but it should not be treated as a universal rule that by itself identifies every subjunctive form, especially in irregular or athematic paradigms.
Hortatory Subjunctive (1st person plural)
The **hortatory subjunctive** (1st person plural) exhorts: 'let us …': **ἀγαπῶμεν** ('let us love'), **πορευθῶμεν** ('let us go'), **προσευχώμεθα** ('let us pray'). Very common in NT exhortation.
**1 John 4:7** — Ἀγαπητοί, **ἀγαπῶμεν ἀλλήλους** ('Beloved, **let us love one another**') — hortatory subjunctive.
**Textual-base note — Rom 6:1:** PT1904 reads **ἐπιμενοῦμεν** τῇ ἁμαρτίᾳ; this is future indicative and therefore is not a subjunctive example in the GTM primary text. NA28/UBS5 read **ἐπιμένωμεν**, a significant mood variant retained as a secondary critical comparison.
Deliberative Subjunctive
The **deliberative subjunctive** poses a question about what should or might be done: **τί ποιήσωμεν;** ('what should we do?'), **ποῦ ὑπάγωμεν;** ('where shall we go?'). The subjunctive marks deliberation or uncertainty and is common in NT dialogue.
**Mark 4:30 (Patriarchal text)** — **πῶς ὁμοιώσωμεν τὴν βασιλείαν τοῦ Θεοῦ** … ('How shall we compare the kingdom of God …?'). **ὁμοιώσωμεν** is first-person plural aorist active subjunctive in a deliberative question.
**Acts 2:37 — textual contrast:** the Patriarchal text reads **Τί ποιήσομεν, ἄνδρες ἀδελφοί;**, with future indicative **ποιήσομεν**, not subjunctive **ποιήσωμεν**. It must not serve as a PT1904 subjunctive example.
Prohibitive Subjunctive
The **prohibitive subjunctive** is especially characteristic in direct second-person prohibitions with **μή + aorist subjunctive**, e.g. **μὴ θαυμάσῃς** ('do not marvel'). Third-person subjunctives can also occur in negative directives or dependent constructions, but these should be analyzed according to their syntax rather than treated as the primary model of the direct prohibitive subjunctive.
**Matt 24:4** — …βλέπετε **μή τις ὑμᾶς πλανήσῃ** ('…See that **no one deceives you**'). Here **πλανήσῃ** is 3 sg. aorist subjunctive in a clause dependent on **βλέπετε**; it is a negative directive/content construction, not the clearest model for the direct second-person prohibitive pattern **μή + aorist subjunctive**.
Subjunctive in Purpose Clauses (ἵνα)
The **most common use** of the subjunctive is after **ἵνα** ('in order that, so that'): **ἦλθεν ἵνα σώσῃ τὸν κόσμον** ('he came **in order that he might save** the world'). ἵνα + subjunctive expresses purpose, content, or result. This construction expanded greatly in Koine, increasingly replacing the infinitive.
**John 3:16** — …ἵνα **πᾶς ὁ πιστεύων εἰς αὐτὸν μὴ ἀπόληται** ἀλλ' ἔχῃ ζωὴν αἰώνιον ('…so that **everyone believing in him should not perish** but **should have** eternal life').
**Matt 6:2** — …ὅπως δοξασθῶσιν ὑπὸ τῶν ἀνθρώπων ('…so that they **might be glorified** by people').
Subjunctive in Conditional Clauses (ἐάν)
After **ἐάν** ('if'), the **subjunctive** forms the **third-class condition**. **ἐάν + subjunctive** introduces an **open, contingent, future, or general** condition depending on context; **probability is not mechanically encoded** by the construction (Chapter 57.5, 80.14). ἐάν historically reflects εἰ + ἄν. In **ἐὰν ὁμολογῶμεν** ('if we confess', 1 John 1:9), the construction itself identifies an ἐάν + subjunctive condition; whether the clause is read as general ('whenever') or in another contextual sense is an exegetical judgment rather than something established by subjunctive morphology alone. This is one of the commonest subjunctive uses.
**1 John 1:9** — **ἐὰν ὁμολογῶμεν** τὰς ἁμαρτίας ἡμῶν … ('**If we confess** our sins …') — ἐάν + 1 pl. pres. subj. The construction is a third-class condition; its more specific contextual force should be argued from the discourse rather than imposed by the mood alone.
Subjunctive in Indefinite Relative Clauses
After a relative pronoun plus **ἄν**, the subjunctive commonly forms a **general/indefinite relative clause** ('whoever, whatever'): **ὃς ἂν ποιήσῃ** ('whoever does …'), **ὃς ἂν θέλῃ** ('whoever wishes'). The indefinite relative **ὅστις** can itself mean 'whoever', but a verse containing ὅστις does not automatically exemplify ἄν + subjunctive.
**Mark 8:35 (PT1904)** — …**ὃς γὰρ ἂν θέλῃ** τὴν ψυχὴν αὐτοῦ σῶσαι ἀπολέσει αὐτήν ('whoever wants to save his life will lose it') — ὅς + ἄν + subjunctive.
**Mark 8:34 (PT1904)** begins **ὅστις θέλει** …; here θέλει is indicative and there is no ἄν, so this verse illustrates ὅστις but not the ἄν + subjunctive construction.
Subjunctive after Temporal Conjunctions
The subjunctive commonly appears in **future or indefinite temporal clauses**, especially with conjunctions such as **ὅταν** ('whenever/when' + ἄν) and, in appropriate constructions, **ἕως** ('until') and **πρίν** ('before'). The exact conjunction, presence or absence of ἄν, polarity, and discourse context all matter; temporal conjunctions should not be reduced to a single mechanical formula. **ὅταν ἔλθῃ** provides a clear model: 'whenever/when he comes.'
**John 16:13** — **ὅταν δὲ ἔλθῃ ἐκεῖνος**, τὸ πνεῦμα τῆς ἀληθείας, **ὁδηγήσει ὑμᾶς** … ('**But whenever that one comes**, the Spirit of truth, **he will guide you** …').
Emphatic Negation (οὐ μή + aorist subjunctive)
**οὐ μή** with the subjunctive (very often the aorist subjunctive) is a **particularly emphatic negative construction**, frequently with future-oriented force: 'certainly not / never'. It should be learned as a construction in its own right, not as a mechanical addition of an 'indicative negative' and a 'subjunctive negative' whose meanings simply combine. Its force and temporal interpretation depend on the construction and context.
**John 10:28** — …καὶ **οὐ μὴ ἀπόλωνται εἰς τὸν αἰῶνα** ('…and **they will certainly never perish**') — οὐ μὴ + 3 pl. aor. subj.
**John 8:51** — …θάνατον **οὐ μὴ θεωρήσῃ** εἰς τὸν αἰῶνα ('…he **will certainly not see** death forever').
Paradigms
Present and Aorist Active Subjunctive of λύω
Regular thematic present and first-aorist active subjunctive forms. Long-vowel subjunctive morphology is highly diagnostic in this paradigm. The present 1 sg. λύω is syncretic with the indicative; present 3 pl. λύωσι(ν) is distinct from indicative λύουσι(ν).
| Person | Present active subjunctive | Aorist active subjunctive |
| 1 sg. | λύω 1 sg. I loosen / may loosen (context-dependent) | λύσω 1 sg. I loosen / may loosen (context-dependent) |
|---|---|---|
| present λύω is syncretic with 1 sg. indicative; identify by syntax/context | ||
| 2 sg. | λύῃς | λύσῃς |
| 3 sg. | λύῃ | λύσῃ |
| 1 pl. | λύωμεν | λύσωμεν |
| 2 pl. | λύητε | λύσητε |
| 3 pl. | λύωσι(ν) | λύσωσι(ν) |
Chapter glossary
- ἀγαπῶμεν — let us love (hortatory)
agapōmen
verb
1 pl. present subjunctive; hortatory use: 'let us love' (1 John 4:7).- ἵνα — in order that, so that (+ subjunctive)
hina
conjunction
The most common subjunctive-introducer; purpose/content/result clauses. John 3:16 ἵνα … μὴ ἀπόληται.- ἐάν — if (+ subjunctive)
ean
conjunction
εἰ + ἄν; introduces third-class conditions. ἐάν + subjunctive is an OPEN, contingent, future, or general condition depending on context; probability is not mechanically encoded (Ch 57.5). ἐὰν ὁμολογῶμεν (1 John 1:9).- ὅταν — whenever (+ subjunctive)
hotan
conjunction
ὅτε + ἄν; general/future temporal clause: ὅταν ἔλθῃ 'whenever he comes'.- ὅστις — whoever / whoever is such as
hostis
pronoun
Indefinite relative. PT1904 Mark 8:34 has ὅστις θέλει ('whoever wishes') with indicative θέλει; for relative + ἄν + subjunctive compare Mark 8:35 ὃς … ἂν θέλῃ.- — subjunctive
verb
Non-indicative mood used in constructions including exhortation, deliberation, prohibition, purpose/content clauses, conditions, indefinite relatives, and certain temporal clauses. Its present–aorist opposition primarily contrasts imperfective and perfective viewpoint; temporal reference is normally supplied or constrained by construction and discourse.- — hortatory subjunctive
verb
1st plural subjunctive exhorting: ἀγαπῶμεν 'let us love'.- — deliberative subjunctive
verb
Subjunctive in a question of what should be done: τί ποιήσωμεν; 'what should we do?'.- — purpose clause (ἵνα)
syntax
ἵνα + subjunctive expressing purpose ('so that'): ἦλθεν ἵνα σώσῃ.- — emphatic negation (οὐ μή)
syntax
οὐ μή with the subjunctive is a particularly emphatic negative construction, frequently future-oriented: 'certainly not/never' (e.g. John 10:28).