Biblangbeta

verb

Greekπληθύνω (plēthunō)
Biblang

plēthunomō

Strong’sG4129

I increase, multiply

stem plēthun-12 times in the New Testamentin 7 of 27 books8 forms occur

What it means

A plain-English reading of the word, with the lexicons it draws on — Abbott-Smith, Strong's, and Liddell-Scott-Jones — right below it, in full.

AI Summary

To increase, multiply — used of making something greater in number or amount, and also of something itself becoming numerous, growing, or abounding 1234. The word can take a direct object (to increase or multiply something) or be used intransitively or in the passive, of people or things becoming many or being multiplied 123.

Sources: 1 Abbott-Smith 2 Strong's 3 LSJ 4 Dodson. Condensed by anthropic/claude-sonnet-5 on 2026-09-23 — it may still misstate what these say; check them yourself if it matters to you.

The lexicons it was drawn from, in full:

Abbott-Smith — the 1922 lexicon entry, in full

πληθύνω

(causal of πληθύω, to be full, < πληθύς, Ion. for πλῆθος), [in LXX chiefly for רבה hi.;]

1. trans., to increase, multiply: II Co 9:10, He 6:14(LXX); pass., to be increased, to multiply: Mt 24:12, Ac 6:7 7:17 9:31 12:24; c. dat. pers. (Da LXX TH 3:31 (98) al.), I Pe 1:2, II Pe 1:2, Ju 2.
2. Intrans., to be increased, to multiply: Ac 6:1.†

G. Abbott-Smith, A Manual Greek Lexicon of the New Testament, 1922 — public domain. References open in the reader.

Strong’s G4129 — the 1890 definition, and where the word comes from

Saidplay-thoo'-no

to increase (transitively or intransitively)

Fromfrom another form of G4128;

King Jamesabound, multiply.

James Strong, Exhaustive Concordance of the Bible, 1890 — public domain. The numbers in it link to the entries here.

Liddell-Scott-Jones — the classical dictionary this word appears in
πληθ-ύνω,
future -ῠνῶNT: aorist ἐπλήθυνα Refs 5th c.AD+ —causal of πληθύω, increase, multiply, LXX+1st c.AD+:—passive, ταῖς γυναιξὶ τὸ γάλα πληθύνεται abounds, Refs 4th c.BC+
2 make multiple, 'plurify', κατὰ ἀναλογίαν [τὸ ἡνωμένον] ἐπληθύναμεν τῶν κατωτέρω πεπληθυσμένων τὸν πρῶτον πληθυσμόν Dam.[same place]; θεοὶ -όμενοι μὲν ἐν τῷ κόσμῳ, περὶ αὐτὸν δὲ ἑνοειδῶς ὄντες Refs 4th c.AD+
3 intransitive, see at {πληθύω} Refs
4 use the plural, Refs 8th c.BC+
II passive, to be in the majority, prevail, δήμου.. χεὶρ ὅπῃ πληθύνεται (codex middle πληθύεται) Refs 4th c.BC+infinitive, ταύτην ἐπαινεῖν.. πληθύνομαι I follow the majority, Refs: perfect πεπλήθυνται LXX
II.2 Grammars, [τὸ ἀπαρέμφατον] οὐ πληθύνεται the infinitive has no plural, Refs 2nd c.AD+

H. G. Liddell, R. Scott, H. S. Jones, A Greek-English Lexicon (9th ed., 1925–1940) — digitised by the Perseus Digital Library and corrected and expanded by Tyndale House, Cambridge, via STEPBible-Data's TFLSJ table, CC BY 4.0. Covers all of Greek literature, not just the Bible.

Translated as

Every occurrence, sorted by the English it was actually given — the evidence for what the word means, not a gloss of it.

multiplied5×multiply2×increase1×increased1×increased in numbers1×increasing in number1×multiplying1×

Berean Standard Bible (BSB), dedicated to the public domain — berean.bible.

Biblang forms

What the New Testament actually uses, first — the whole system this verb is built from is one click further down.

Form and the Greek behind itWhat it isUsuallyTimes
plēthunoteἐπληθύνετοwas happening · he/she/itimperfect middle or passive indicative 3rd person singularincreased3×
plēthunamiπληθυνῶwill happen · Ifuture active indicative 1st person singularmultiply1×
plēthunatiπληθυνεῖwill happen · he/she/itfuture active indicative 3rd person singularmultiply1×
plēthunitaἐπληθύνθηhappened · he/she/itaorist passive indicative 3rd person singularmultiplied1×
plēthunitoiaπληθυνθείηhappened · he/she/itaorist passive optative 3rd person singularmultiplied3×
plēthuniraπληθυνθῆναιhappened · the “to …” formaorist passive infinitiveincrease1×
plēthunarōntosπληθύνωνhappening now · subjectpresent active participle nominative singular masculinemultiplying1×
plēthunarōntoiuπληθυνόντωνhappening now · of, belonging topresent active participle genitive plural masculineincreasing in number1×

Every form the New Testament uses, in paradigm order. What the system can build beyond them — the whole of this verb, whether the text happens to use it or not — is in the tables below.

Every form the system can build — all 172, by mood, including the ones the New Testament never uses
Statements — indicative mood, 6 occurrences

the subject acts active voice

Who personhappening now presentwas happening imperfectwill happen futurehappened aoristhas happened perfecthad happened pluperfect
I 1st person singularplēthunamōplēthunameplēthunami1×πληθυνῶplēthunamaplēthunamēplēthunamelē
you 2nd person singularplēthunasōplēthunaseplēthunasiplēthunasaplēthunasēplēthunaselē
he/she/it 3rd person singularplēthunatōplēthunateplēthunati1×πληθυνεῖplēthunataplēthunatēplēthunatelē
we 1st person pluralplēthunanōplēthunaneplēthunaniplēthunanaplēthunanēplēthunanelē
ye 2nd person pluralplēthunavōplēthunaveplēthunaviplēthunavaplēthunavēplēthunavelē
they 3rd person pluralplēthunalōplēthunaleplēthunaliplēthunalaplēthunalēplēthunalelē

acts on itself, or is acted on middle or passive voice

Who personhappening now presentwas happening imperfecthas happened perfecthad happened pluperfect
I 1st person singularplēthunomōplēthunomeplēthunomēplēthunomelē
you 2nd person singularplēthunosōplēthunoseplēthunosēplēthunoselē
he/she/it 3rd person singularplēthunotōplēthunote3×ἐπληθύνετοplēthunotēplēthunotelē
we 1st person pluralplēthunonōplēthunoneplēthunonēplēthunonelē
ye 2nd person pluralplēthunovōplēthunoveplēthunovēplēthunovelē
they 3rd person pluralplēthunolōplēthunoleplēthunolēplēthunolelē

acted on passive voice

Who personwill happen futurehappened aorist
I 1st person singularplēthunimiplēthunima
you 2nd person singularplēthunisiplēthunisa
he/she/it 3rd person singularplēthunitiplēthunita1×ἐπληθύνθη
we 1st person pluralplēthuniniplēthunina
ye 2nd person pluralplēthuniviplēthuniva
they 3rd person pluralplēthuniliplēthunila
May, might — subjunctive mood, no occurrences

the subject acts active voice

Who personhappening now presenthappened aoristhas happened perfect
I 1st person singularplēthunameiōplēthunameiaplēthunameiē
you 2nd person singularplēthunaseiōplēthunaseiaplēthunaseiē
he/she/it 3rd person singularplēthunateiōplēthunateiaplēthunateiē
we 1st person pluralplēthunaneiōplēthunaneiaplēthunaneiē
ye 2nd person pluralplēthunaveiōplēthunaveiaplēthunaveiē
they 3rd person pluralplēthunaleiōplēthunaleiaplēthunaleiē

acts on itself, or is acted on middle or passive voice

Who personhappening now presenthas happened perfect
I 1st person singularplēthunomeiōplēthunomeiē
you 2nd person singularplēthunoseiōplēthunoseiē
he/she/it 3rd person singularplēthunoteiōplēthunoteiē
we 1st person pluralplēthunoneiōplēthunoneiē
ye 2nd person pluralplēthunoveiōplēthunoveiē
they 3rd person pluralplēthunoleiōplēthunoleiē

acted on passive voice

Who personhappened aorist
I 1st person singularplēthunimeia
you 2nd person singularplēthuniseia
he/she/it 3rd person singularplēthuniteia
we 1st person pluralplēthunineia
ye 2nd person pluralplēthuniveia
they 3rd person pluralplēthunileia
Commands — imperative mood, no occurrences

the subject acts active voice

Who personhappening now presenthappened aoristhas happened perfect
you 2nd person singularplēthunasōrplēthunasarplēthunasēr
he/she/it 3rd person singularplēthunatōrplēthunatarplēthunatēr
ye 2nd person pluralplēthunavōrplēthunavarplēthunavēr
they 3rd person pluralplēthunalōrplēthunalarplēthunalēr

acts on itself, or is acted on middle or passive voice

Who personhappening now presenthas happened perfect
you 2nd person singularplēthunosōrplēthunosēr
he/she/it 3rd person singularplēthunotōrplēthunotēr
ye 2nd person pluralplēthunovōrplēthunovēr
they 3rd person pluralplēthunolōrplēthunolēr

acted on passive voice

Who personhappened aorist
you 2nd person singularplēthunisar
he/she/it 3rd person singularplēthunitar
ye 2nd person pluralplēthunivar
they 3rd person pluralplēthunilar
Wishes — optative mood, 3 occurrences

the subject acts active voice

Who personhappening now presenthappened aorist
I 1st person singularplēthunamoiōplēthunamoia
you 2nd person singularplēthunasoiōplēthunasoia
he/she/it 3rd person singularplēthunatoiōplēthunatoia
we 1st person pluralplēthunanoiōplēthunanoia
ye 2nd person pluralplēthunavoiōplēthunavoia
they 3rd person pluralplēthunaloiōplēthunaloia

acts on itself, or is acted on middle or passive voice

Who personhappening now present
I 1st person singularplēthunomoiō
you 2nd person singularplēthunosoiō
he/she/it 3rd person singularplēthunotoiō
we 1st person pluralplēthunonoiō
ye 2nd person pluralplēthunovoiō
they 3rd person pluralplēthunoloiō

acted on passive voice

Who personhappened aorist
I 1st person singularplēthunimoia
you 2nd person singularplēthunisoia
he/she/it 3rd person singularplēthunitoia3×πληθυνθείη
we 1st person pluralplēthuninoia
ye 2nd person pluralplēthunivoia
they 3rd person pluralplēthuniloia
The “to …” form — infinitive, 1 occurrence
Who is acting voicehappening now presentwill happen futurehappened aoristhas happened perfect
the subject acts active voiceplēthunarōplēthunariplēthunaraplēthunarē
acts on itself, or is acted on middle or passive voiceplēthunorōplēthunorē
acted on passive voiceplēthuniriplēthunira1×πληθυνθῆναι
Used as an adjective — participle, 2 occurrences
Who is acting voicehappening now presentwill happen futurehappened aoristhas happened perfect
the subject acts active voiceplēthunarōntos2×πληθύνωνplēthunarintosplēthunarantosplēthunarēntos
acts on itself, or is acted on middle or passive voiceplēthunorōntosplēthunorēntos
acted on passive voiceplēthunirintosplēthunirantos

Each is given in the form it takes as a subject. From there a participle carries the ordinary noun endings, in every case, number and gender — so these four columns are the whole of what the verb contributes.

How every form is built — the slots that make them
plēthunstem+aoeiwho is acting voice+mstnvl—who person+—eiroistatement, command, wish mood+ōeiaēelēwhen tense+—ntthen it declines+—ogender+—sits job in the sentence case

plēthun is this word in every one of its forms. The slots after it make all the rest.

same in every form varies — every value shown

Where it appears

Every verse the word appears in, filed under the form it takes there.

12 occurrences, every one of them listed

plēthunote“increased”was happening · he/she/itimperfect middle or passive indicative 3rd person singular3×

Acts 6:7“increased”… tos logos tou theou auxanate, kai plēthunote tos arithmos toiu mathētoiu en Ierousalēm …So the word of God continued to spread. The number of disciples in Jerusalem grew rapidly, and a great number of priests became obedient to the faith.

Acts 9:31“increased in numbers”… kai ta paraklēsia teu hagieu pneumeu plēthunote.… Lord and the encouragement of the Holy Spirit.

Acts 12:24“multiplied”… de logos tou theou auxanate kai plēthunote.But the word of God continued to spread and multiply.

plēthunami“multiply”will happen · Ifuture active indicative 1st person singular1×

Hebrews 6:14… mēn eulogarōntos eulogami sin kai plēthunarōntos plēthunami sin;… I will surely bless you and multiply your descendants.”

plēthunati“multiply”will happen · he/she/itfuture active indicative 3rd person singular1×

2 Corinthians 9:10… kai arton eis brōsian chorēgati kai plēthunati ton sporon vu kai auxanati teim …… bread for food will supply and multiply your store of seed and will …

plēthunita“multiplied”happened · he/she/itaorist passive indicative 3rd person singular1×

Acts 7:17“multiplied”… to Abraam, auxanata tos laos kai plēthunita en Aigupta,… promise to Abraham, our people in Egypt increased greatly in …

plēthunitoia“multiplied”happened · he/she/itaorist passive optative 3rd person singular3×

1 Peter 1:2“multiplied”… Iēsu Christou; charitas vi kai eirēnas plēthunitoia.… obedience to Jesus Christ and sprinkling by His blood: Grace and peace be yours …

2 Peter 1:2charitas vi kai eirēnas plēthunitoia en epignōsia tou theou kai Iēsu …Grace and peace be multiplied to you through the knowledge of …

Jude 1:2elesem vi kai eirēnas kai agapas plēthunitoia.Mercy, peace, and love be multiplied to you.

plēthunira“increase”happened · the “to …” formaorist passive infinitive1×

Matthew 24:12“increase”kai dia tem plēthunira tan anomian psuchiti tas agapas toiu …Because of the multiplication of wickedness, the love of most will grow cold.

plēthunarōntos“multiplying”happening now · subjectpresent active participle nominative singular masculine1×

Hebrews 6:14“multiplying”… Ei mēn eulogarōntos eulogami sin kai plēthunarōntos plēthunami sin;… I will surely bless you and multiply your descendants.”

plēthunarōntoiu“increasing in number”happening now · of, belonging topresent active participle genitive plural masculine1×

Acts 6:1En de tai hēmerai houtai plēthunarōntoiu toiu mathētoiu geneta gongusmos toiu Hellēnistoiu …… those days when the disciples were increasing in number, the Grecian Jews among them began …