verb
diamarturomō
Strong’sG1263
I give solemn evidence, testify solemnly
stem diamartur-15 times in the New Testamentin 6 of 27 books9 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
διαμαρτύρομαι means to testify or give solemn evidence, to bear witness to something with force and solemnity 124. It is used of solemnly declaring or protesting a truth, such as bearing witness to the gospel 3, and appears with a personal object meaning to testify to someone 1.
The word also carries the sense of solemnly charging or urging someone, giving an earnest exhortation or adjuration rather than simply reporting a fact 123. This use appears with phrases calling on God as witness to the charge 1, and can take the form of urging someone to do something 3.
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
δια-μαρτύρομαι, depon., of Ionic origin, intensive of the simple μαρτύρομαι, q.v.,
[in LXX chiefly for עוּד hi., usually c. dat. pers., De 4:26 8:19, I Ki 8:9, al.;]
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament, 1922 — public domain. References open in the reader.
Strong’s G1263 — the 1890 definition, and where the word comes from
Liddell-Scott-Jones — the classical dictionary this word appears in
aorist 1 -μαρτῡράμην: perfect -μεμαρτύρημαι [ῠ], deponent verb:—absolutely, call gods and men to witness, protest solemnly, especially in case of falsehood or wrong, βοᾶν καὶ δ. Refs 4th c.BC+; δ. μή.., with infinitive, Refs; δ. ὅπως μή.., with future, Refs; δ. τινὶ μὴ ποιεῖν protest against his doing, Refs 4th c.BC+: with infinitive, Refs 2nd c.BC+; call to witness, ὑμῖν τὸν οὐρανόν LXX
2 generally, protest, asseverate, Refs 5th c.BC+: with accusative, bear witness to, τὸ εὐαγγέλιον NT; testify, LXX; τῇ Ἱερουσαλὴμ τὰς ἀνομίας αὐτῆςLXX
3 absolutely, beg earnestly of one, conjure him, NT+5th c.BC+; δ. τινὰ ἵνα.. NT
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.
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 it | What it is | Usually | Times |
|---|---|---|---|
| diamarturomōδιαμαρτύρομαι | happening now · Ipresent middle or passive indicative 1st person singular | charge | 2× |
| diamarturotōδιαμαρτύρεταί | happening now · he/she/itpresent middle or passive indicative 3rd person singular | testifies | 1× |
| diamarturesaδιεμαρτύρω | happened · youaorist middle indicative 2nd person singular | testified | 1× |
| diamarturetaδιεμαρτύρατο | happened · he/she/itaorist middle indicative 3rd person singular | testified | 2× |
| diamarturenaδιεμαρτυράμεθα | happened · weaorist middle indicative 1st person plural | solemnly warned | 1× |
| diamarturoteiōδιαμαρτύρηται | happening now · he/she/itpresent middle or passive subjunctive 3rd person singular | warn | 1× |
| diamartureraδιαμαρτύρασθαι | happened · the “to …” formaorist middle infinitive | testify | 2× |
| diamarturorōntosδιαμαρτυρόμενος | happening now · subjectpresent middle or passive participle nominative singular masculine | testifying | 4× |
| diamarturerantoisδιαμαρτυράμενοι | happened · subjectaorist middle participle nominative plural masculine | testified | 1× |
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 86, by mood, including the ones the New Testament never uses
Statements — indicative mood, 7 occurrences
acts on itself, or is acted on middle or passive voice
| Who person | happening now present | was happening imperfect | has happened perfect | had happened pluperfect |
|---|---|---|---|---|
| I 1st person singular | diamarturomō2×διαμαρτύρομαι | diamarturome | diamarturomē | diamarturomelē |
| you 2nd person singular | diamarturosō | diamarturose | diamarturosē | diamarturoselē |
| he/she/it 3rd person singular | diamarturotō1×διαμαρτύρεταί | diamarturote | diamarturotē | diamarturotelē |
| we 1st person plural | diamarturonō | diamarturone | diamarturonē | diamarturonelē |
| ye 2nd person plural | diamarturovō | diamarturove | diamarturovē | diamarturovelē |
| they 3rd person plural | diamarturolō | diamarturole | diamarturolē | diamarturolelē |
acts on or for itself middle voice
| Who person | will happen future | happened aorist |
|---|---|---|
| I 1st person singular | diamarturemi | diamarturema |
| you 2nd person singular | diamarturesi | diamarturesa1×διεμαρτύρω |
| he/she/it 3rd person singular | diamartureti | diamartureta2×διεμαρτύρατο |
| we 1st person plural | diamartureni | diamarturena1×διεμαρτυράμεθα |
| ye 2nd person plural | diamarturevi | diamartureva |
| they 3rd person plural | diamartureli | diamarturela |
May, might — subjunctive mood, 1 occurrence
acts on itself, or is acted on middle or passive voice
| Who person | happening now present | has happened perfect |
|---|---|---|
| I 1st person singular | diamarturomeiō | diamarturomeiē |
| you 2nd person singular | diamarturoseiō | diamarturoseiē |
| he/she/it 3rd person singular | diamarturoteiō1×διαμαρτύρηται | diamarturoteiē |
| we 1st person plural | diamarturoneiō | diamarturoneiē |
| ye 2nd person plural | diamarturoveiō | diamarturoveiē |
| they 3rd person plural | diamarturoleiō | diamarturoleiē |
acts on or for itself middle voice
| Who person | happened aorist |
|---|---|
| I 1st person singular | diamarturemeia |
| you 2nd person singular | diamartureseia |
| he/she/it 3rd person singular | diamartureteia |
| we 1st person plural | diamartureneia |
| ye 2nd person plural | diamartureveia |
| they 3rd person plural | diamartureleia |
Commands — imperative mood, no occurrences
acts on itself, or is acted on middle or passive voice
| Who person | happening now present | has happened perfect |
|---|---|---|
| you 2nd person singular | diamarturosōr | diamarturosēr |
| he/she/it 3rd person singular | diamarturotōr | diamarturotēr |
| ye 2nd person plural | diamarturovōr | diamarturovēr |
| they 3rd person plural | diamarturolōr | diamarturolēr |
acts on or for itself middle voice
| Who person | happened aorist |
|---|---|
| you 2nd person singular | diamarturesar |
| he/she/it 3rd person singular | diamarturetar |
| ye 2nd person plural | diamarturevar |
| they 3rd person plural | diamarturelar |
Wishes — optative mood, no occurrences
acts on itself, or is acted on middle or passive voice
| Who person | happening now present |
|---|---|
| I 1st person singular | diamarturomoiō |
| you 2nd person singular | diamarturosoiō |
| he/she/it 3rd person singular | diamarturotoiō |
| we 1st person plural | diamarturonoiō |
| ye 2nd person plural | diamarturovoiō |
| they 3rd person plural | diamarturoloiō |
acts on or for itself middle voice
| Who person | happened aorist |
|---|---|
| I 1st person singular | diamarturemoia |
| you 2nd person singular | diamarturesoia |
| he/she/it 3rd person singular | diamarturetoia |
| we 1st person plural | diamarturenoia |
| ye 2nd person plural | diamarturevoia |
| they 3rd person plural | diamartureloia |
The “to …” form — infinitive, 2 occurrences
| Who is acting voice | happening now present | will happen future | happened aorist | has happened perfect |
|---|---|---|---|---|
| acts on itself, or is acted on middle or passive voice | diamarturorō | diamarturorē | ||
| acts on or for itself middle voice | diamartureri | diamarturera2×διαμαρτύρασθαι |
Used as an adjective — participle, 5 occurrences
| Who is acting voice | happening now present | will happen future | happened aorist | has happened perfect |
|---|---|---|---|---|
| acts on itself, or is acted on middle or passive voice | diamarturorōntos4×διαμαρτυρόμενος | diamarturorēntos | ||
| acts on or for itself middle voice | diamarturerintos | diamarturerantos1× |
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
diamartur 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.
15 occurrences, every one of them listed
diamarturomō“charge”happening now · Ipresent middle or passive indicative 1st person singular2×
1 Timothy 5:21diamarturomō enōpion tou theou kai Christou Iēsu …I solemnly charge you before God and Christ Jesus …
2 Timothy 4:1“solemnly charge”Diamarturomō enōpion tou theou kai Christou Iēsu, …… charge you in the presence of God and of Christ Jesus, who will …
diamarturotō“testifies”happening now · he/she/itpresent middle or passive indicative 3rd person singular1×
Acts 20:23“testifies”… tem pneumem tem hagiem kata polan diamarturotō mi legarōntem hoti desmeim kai thlipsiais …… know that in town after town the Holy Spirit warns me that chains and afflictions await me.
diamarturesa“testified”happened · youaorist middle indicative 2nd person singular1×
Acts 23:11… tos kurios legata; Tharsasōr, hōs gar diamarturesa teim peri mu eis Ierousalēm houtōs …… said, “Take courage! As you have testified about Me in Jerusalem, so also …
diamartureta“testified”happened · he/she/itaorist middle indicative 3rd person singular2×
Acts 2:40heteroi tē logoi polloteroi diamartureta, kai parakalate autoin legarōntos; Sōzivar apo …With many other words he testified, and he urged them, “Be saved …
Hebrews 2:6diamartureta de pou tinos legarōntos; Tinem atō …But somewhere it is testified in these words: “What is man …
diamarturena“solemnly warned”happened · weaorist middle indicative 1st person plural1×
1 Thessalonians 4:6… houteiu, kathōs kai prolegana vi kai diamarturena.… we have already told you and solemnly warned you.
diamarturoteiō“warn”happening now · he/she/itpresent middle or passive subjunctive 3rd person singular1×
Luke 16:28echamō gar pente adelfoin, hopōs diamarturoteiō autoi, hina mē kai autois erchaleia …… I have five brothers. Let him warn them, so that they will not …
diamarturera“testify”happened · the “to …” formaorist middle infinitive2×
Acts 10:42… parangelata ni kērussara to lao kai diamarturera hoti houtos atō tos horizorēntos hupo …… preach to the people and to testify that He is the One appointed …
Acts 20:24“testify”… han labama para tou kuriou Iēsu, diamarturera tem euangeliem tau charitau tou theou.… I have received from the Lord Jesus — the ministry of testifying to the good news of God’s grace.
diamarturorōntos“testifying”happening now · subjectpresent middle or passive participle nominative singular masculine4×
Acts 18:5“testified”… Timotheos, sunechote to logo tos Paulos, diamarturorōntos toi Ioudaioi arō ton christon Iēsun.… Silas and Timothy came down from Macedonia, Paul devoted himself fully to the word, testifying to the Jews that Jesus is the Christ.
Acts 20:21diamarturorōntos Ioudaioi tē kai Hellēnoi tan eis …testifying to Jews and Greeks alike about …
Acts 28:23… eis tan xenian polloterois, hoi ektithote diamarturorōntos tan basileian tou theou peitharōntos tē …… to them from morning to evening, testifying about the kingdom of God and …
2 Timothy 2:14“warn”Houteim hupomimnēskasōr, diamarturorōntos enōpion tou kuriou, mē logomacharō, epi …Remind the believers of these things, charging them before God to avoid quarreling over words, which succeeds only in leading the …
diamarturerantois“testified”happened · subjectaorist middle participle nominative plural masculine1×
Acts 8:25Tois men oun diamarturerantois kai lalarantois ton logon tou kuriou …And after Peter and John had testified and spoken the word of the …