The θη formative — the unmistakable passive flag. Aorist passive paradigm, consonant changes before θη, the second aorist passive (η without θ), the future passive, and the divine passive in NT theology.
Up through the imperfect, middle and passive shared identical forms. Same endings, ambiguity resolved only by context.
When you see θη, the passive interpretation is locked in. No more ambiguity.
When you see θη (or sometimes just η) in a verb form, you're looking at an aorist or future passive.
One new formative gives you both the past passive and the future passive. ἐλύθην "I was loosed," λυθήσομαι "I will be loosed."
| Person | Singular | Plural |
|---|---|---|
| 1st | ἐλύθην — I was loosed | ἐλύθημεν |
| 2nd | ἐλύθης | ἐλύθητε |
| 3rd | ἐλύθη | ἐλύθησαν |
The endings are active-shaped: -ν, -ς, —, -μεν, -τε, -σαν.
Despite being passive in voice, the aorist passive uses active-style secondary endings. The θη is what carries the passive meaning, not the endings.
| Stem ends in... | + θη becomes | Example |
|---|---|---|
| π, β, φ (labial) | φθη | γράφω → ἐγράφθην |
| κ, γ, χ (velar) | χθη | διώκω → ἐδιώχθην |
| τ, δ, θ, ζ (dental) | σθη | πείθω → ἐπείσθην |
⚠ Practical reading rule: you don't need to memorize every phonological combination. Just train your eye to spot θ + η in the body of a verb form. The lexicon supplies principal parts when in doubt.
The θη form marker signals the morphological slot — but many verbs use this slot without passive meaning. These are called θη-middle intransitives or "deponent aorist passives."
Always check whether the verb is inherently deponent before assigning passive force to a θη form.
A small but important set of verbs uses just η (without the θ) for the aorist passive.
| Present | 2nd Aor Pass 1sg | Meaning |
|---|---|---|
| γράφω | ἐγράφην | I was written |
| ἀποστέλλω | ἀπεστάλην | I was sent |
| σπείρω | ἐσπάρην | I was sown |
| στρέφω | ἐστράφην | I was turned |
Pattern: ἐ + stem + η + secondary endings. About 10 NT verbs use this pattern. They still have passive meaning — they just lack the θ.
| Person | Singular | Plural |
|---|---|---|
| 1st | λυθήσομαι | λυθησόμεθα |
| 2nd | λυθήσῃ | λυθήσεσθε |
| 3rd | λυθήσεται | λυθήσονται |
Recipe: stem + θη + σ + primary middle endings.
Looks like a future middle but with θη embedded. The θη is the giveaway. No augment, since it's future.
| Form | Voice | Meaning |
|---|---|---|
| ἐλύσατο | Middle | "He loosed (for himself / something of his)" |
| ἐλύθη | Passive | "He was loosed (by someone else)" |
Visual signature:
Look for σα vs θη — that's the giveaway.
Agency markers in passives: ὑπό + gen for a personal agent ("by John"); plain dative for impersonal means ("with water"); διά + gen for instrumental cause ("through faith").
Greek often uses the passive voice when God is the unstated agent. Passive voice with no expressed agent — but the implied actor is God.
Whenever you encounter a passive in the NT without an expressed agent, ask: is God the implied actor? Often yes — especially in sayings about salvation, judgment, comfort, revelation, or eschatological action.
"Blessed are those who mourn, for they shall be comforted [by God]."
This is not vague uplift. It is a promise that God himself is the comforter. The Beatitudes are saturated with divine passives.
"Your sins are forgiven [by God]." Jesus to the paralytic.
Jesus says this and the religious leaders gasp because they recognize the divine passive — Jesus is implicitly claiming to forgive in God's place. The grammar carries the theological scandal.
"Christ was raised from the dead."
The passive voice is theologically important: in the Pauline-Lukan formulation, Christ doesn't raise himself — God raises him. Resurrection is the Father's vindication of the Son.
Future passive: ἐγερθήσεται τῇ τρίτῃ ἡμέρᾳ ("he will be raised on the third day").
"Therefore, having been justified from faith, we have peace with God."
The passive keeps the recipient in focus. God justifies; sinners are justified.
"Those whom he predestined, these he also called; those whom he called, justified; those whom he justified, glorified."
Five aorists — all active here, with God as explicit subject. The "golden chain": predestined → called → justified → glorified. Each link is an aorist event, portrayed as a completed whole.
Striking: ἐδόξασεν ("glorified") is in some sense still future for believers — yet Paul puts it in past-tense aorist, signaling its certainty.
~58 NT occurrences. Aorist passive 3sg of ἐγείρω.
Central to NT resurrection language. The passive points to God as agent — the Father raised the Son.
Other key aorist passives:
Second Temple Judaism developed elaborate practices for avoiding the divine name:
The NT inherits this convention thoroughly. The Beatitudes, Pauline soteriology (justified, saved, sanctified, glorified), the resurrection language — all saturated with divine passives.
When you read these passives, you're reading prayer and theology fused into syntax.
θη formative + active-style endings = aorist passive. θη + σ + middle endings = future passive. Recognize θη at sight, watch for divine agency, and remember that some θη forms are deponent.
Unit IV complete. You now have all the indicative past tenses. Next: the future tense and the perfect — the rest of the indicative system.