Greek word · G1263

διαμαρτύρομαι

diamartyromai

to testify solemnly

To testify solemnly or thoroughly, to bear earnest witness; to warn solemnly, to call to witness. The prefix dia- adds thoroughness and seriousness.

Appears 15 times in 15 verses of the Greek New Testament. ·

What it means

δια-μαρτύρομαι, depon., of Ionic origin, intensive of the simple μαρτύρομαι, which see,

[in LXX chiefly for עוּד hi., usually with dative of person(s), Deuteronomy 4:26 8:19, 1 Samuel 8:9, al. ;]

solemnly to protest: Luke 16:28, Acts 2:40 8:25 10:42 18:5 20:21, 23, 24 23:11 28:23, 1 Thessalonians 4:6, Hebrews 2:6; in adjuration, before ἐνώπιον τ. θεοῦ, 1 Timothy 5:21, 2 Timothy 2:14 4:1 (Cremer, 415).†

(AS)

From G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922), via STEPBible.org (CC BY 4.0).

In depth

From the study of Acts 20:24

Range of meaning

To testify solemnly or thoroughly, to bear earnest witness; to warn solemnly, to call to witness. The prefix dia- adds thoroughness and seriousness.

Against the English

'Testify' (most versions) is close. YLT and WEB 'testify fully' bring out the intensity. NLT 'telling others' loses the court-room solemnity.

Used elsewhere in the period

Common in the Greek Old Testament (LXX) for solemn warning before witnesses (Deut 8:19; 32:46). In Acts it marks apostolic witness (2:40; 8:25; 10:42; 18:5; 20:21; 23:11; 28:23). BDAG gives 'make a solemn declaration about the truth of something, testify of, bear witness to'.

From the study of Acts 2:40

Range of meaning

To call witnesses to something; to testify solemnly; to warn earnestly; to charge someone in the presence of God. The prefix dia- makes it stronger than plain "testify" (martyreō): this is testimony with the force of a sworn warning.

Against the English

BSB, WEB and ESV give "testified" or "bore witness". NASB has "solemnly testified" and NIV "warned". Plain "testified" can sound to a modern reader like sharing a personal story ("giving my testimony"). The Greek is closer to a formal, urgent warning that leaves the hearer responsible.

How it drifted

In modern church language "testify" or "give a testimony" usually means telling your conversion story. The Greek word is about solemn attestation and warning, not autobiography.

Used elsewhere in the period

In the Greek Old Testament (the Septuagint, LXX) it translates the Hebrew hē‘îd, "warn solemnly, call to witness". Examples: Exod 19:21 ("warn the people" not to break through to Sinai), Deut 8:19 ("I solemnly warn you today that you will surely perish"), and 1 Sam 8:9 (Samuel warning Israel about kings). Luke uses it often: the rich man wants Lazarus to "warn" his brothers so they escape torment (Luke 16:28). Peter says Jesus commanded the apostles to "testify solemnly" that he is the appointed judge (Acts 10:42). Paul "testified solemnly" to Jews and Greeks about repentance (Acts 20:21).

From the study of Hebrews 2:6

Range of meaning

BDAG gives two senses. (1) To make a solemn declaration that something is true: to testify or bear witness earnestly, as in Acts 2:40; 8:25; 20:21, 24. (2) To charge or warn someone with authority, as in 1 Timothy 5:21; 2 Timothy 4:1. The prefix dia- strengthens the root martyr- ('witness'): 'testify thoroughly, solemnly'.

Against the English

KJV, WEB: 'testified'; YLT: 'did testify fully'; BSB turns it into an impersonal passive, 'it is testified'. Plain 'testified' loses some of the formal, courtroom weight, and the passive loses the 'someone'.

Used elsewhere in the period

In the Greek Old Testament it is the word for solemn covenant warnings: 'go down and warn the people' (Exodus 19:21); 'I call heaven and earth to witness against you' (Deuteronomy 4:26; 8:19); Samuel 'solemnly warning' Israel about kings (1 Samuel 8:9). This is its only use in Hebrews.

Where it appears

Luke · 1
  1. Luke 16:28 διαμαρτύρηται he may warn

    for I have five brothers. Let him warn them, so that they will not also end up in this place of torment.’

    Here: To give someone a solemn, witness-backed warning. The present tense pictures a thorough, insistent warning. Lazarus is the one meant to give it: a messenger from the dead who has seen the outcome.

Acts · 9
  1. Acts 2:40 διεμαρτύρατο he earnestly testified

    With many other words he testified, and he urged them, “Be saved from this corrupt generation.”

    Here: Peter bore solemn witness and gave a grave warning, as if under oath, before God. The aorist tense sums up the whole act of testifying as one event.

  2. Acts 8:25 διαμαρτυράμενοι having earnestly testified

    And after Peter and John had testified and spoken the word of the Lord, they returned to Jerusalem, preaching the gospel in many of the Samaritan villages.

  3. Acts 10:42 διαμαρτύρασθαι to testify fully

    And He commanded us to preach to the people and to testify that He is the One appointed by God to judge the living and the dead.

    Here: A strong word for testifying: to declare something with full seriousness, as if under oath and with God as witness, often carrying a warning. It suits the content: a coming judgment.

  4. Acts 18:5 διαμαρτυρόμενος earnestly testifying

    And when Silas and Timothy came down from Macedonia, Paul devoted himself fully to the word, testifying to the Jews that Jesus is the Christ.

    Here: 'Solemnly testifying.' This is courtroom and oath language for giving evidence on one's honour, sometimes as a warning. It describes how he was absorbed in the word: by giving formal witness, not by teaching casually.

  5. Acts 20:21 διαμαρτυρόμενος earnestly testifying

    testifying to Jews and Greeks alike about repentance to God and faith in our Lord Jesus Christ.

    Here: A present participle that describes how Paul carried out the teaching of verse 20: he kept on solemnly bearing witness. The word has a courtroom weight to it. It means declaring something on your own responsibility, and it often carries a warning.

  6. Acts 20:23 διαμαρτύρεταί fully testifies

    I only know that in town after town the Holy Spirit warns me that chains and afflictions await me.

    Here: A strong word for a serious, witnessed declaration or warning. The present tense describes something still going on: the Spirit keeps testifying. Paul uses the same verb for his own preaching in verses 21 and 24.

  7. Acts 20:24 διαμαρτύρασθαι to testify fully

    But I consider my life of no value to me, if only I may finish my course and complete the ministry I have received from the Lord Jesus—the ministry of testifying to the good news of God’s grace.

    Here: Explains what the service is: to bear solemn, thorough witness, as before a court. It echoes verse 23, where the Spirit 'solemnly testifies' to Paul that chains await him.

  8. Acts 23:11 διεμαρτύρω you have fully testified

    The following night the Lord stood near Paul and said, “Take courage! As you have testified about Me in Jerusalem, so also you must testify in Rome.”

    Here: “You bore solemn, thorough witness.” The past tense sums up all Paul's testimony in Jerusalem (the speech on the barracks steps in chapter 22, the hearing before the council in 23:1–6) as one completed task.

  9. Acts 28:23 διαμαρτυρόμενος fully testifying

    So they set a day to meet with Paul, and many people came to the place he was staying. He expounded to them from morning to evening, testifying about the kingdom of God and persuading them about Jesus from the Law of Moses and the Prophets.

    Here: Bearing formal, earnest witness, the language of a witness who stakes himself on what he declares. It fulfils the Lord's word in Acts 23:11 that Paul must 'testify' in Rome.

1 Thessalonians · 1
  1. 1 Thessalonians 4:6 διεμαρτυράμεθα. thoroughly warned.

    and no one should ever violate or exploit his brother in this regard, because the Lord will avenge all such acts, as we have already told you and solemnly warned you.

    Here: To declare solemnly, as if calling witnesses, and so to warn with full seriousness. Paul is saying they were not merely informed. They were formally put on notice.

1 Timothy · 1
  1. 1 Timothy 5:21 Διαμαρτύρομαι I earnestly testify

    I solemnly charge you before God and Christ Jesus and the elect angels to maintain these principles without bias, and to do nothing out of partiality.

    Here: A formal, oath-like charge: Paul calls witnesses and lays an obligation on Timothy in their hearing. Present tense, first person: he is doing it as he writes.

2 Timothy · 2
  1. 2 Timothy 2:14 διαμαρτυρόμενος solemnly charging [them]

    Remind the believers of these things, charging them before God to avoid quarreling over words, which succeeds only in leading the listeners to ruin.

    Here: A weighty word with the feel of an oath or a formal warning given under witness. The reminding is not casual: Timothy is to put people under solemn obligation.

  2. 2 Timothy 4:1 Διαμαρτύρομαι I earnestly declare

    I charge you in the presence of God and of Christ Jesus, who will judge the living and the dead, and in view of His appearing and His kingdom:

    Here: 'I solemnly charge.' A formal, oath-like charge given with witnesses called in. The present tense marks it as a solemn act done in the moment of speaking. No 'you' is written, but Timothy is plainly the one being charged, and the commands of verse 2 are what the charge contains.

Hebrews · 1
  1. Hebrews 2:6 διεμαρτύρατο Has testified

    But somewhere it is testified in these words: “What is man that You are mindful of him, or the son of man that You care for him?

    Here: A strong word for a formal, binding declaration made as if before witnesses. It is stronger than plain 'testify'. It puts the psalm on record as evidence for the argument, and it echoes v.4, where God 'bore witness alongside' the first preachers.

Word data: STEPBible.org (CC BY 4.0), main text only.