διαμαρτύρομαι; deponent middle; imperfect 
διεμαρτυρόμην (
Acts 2:40 Rec.); 1 aorist 
διεμαρτυράμην; in the 
Sept. mostly for 
הֵעִיד; often in Greek writings from Xenophon down; see a multitude of examples from them in 
Winers De verb. comp. etc. Part v., p. 20ff; 
to call gods and men to witness [
διά, with the interposition of gods and men; cf. Ellicott (after Winer's) on 
1 Timothy 5:21];
1. to testify, i. e. earnestly, religiously to charge: followed by an imperative 
Acts 2:40; 
ἐνώπιον τοῦ θεοῦ κ. 
Χριστοῦ Ἰησοῦ, 
2 Timothy 4:1 (
2 Kings 17:13; Xenophon, Cyril 7, 1, 17 
σὺ μὴ πρότερον ἔμβαλλε τοῖς πολεμίοις, 
διαμαρτύρομαι, 
πρίν, etc.); also with 
ἐνώπιον τοῦ θεοῦ κτλ. followed by 
ἵνα [cf. Buttmann, 237 (204)], 
1 Timothy 5:21 (followed by 
μή, 
Exodus 19:21); followed by the infinitive 
2 Timothy 2:14 [not Lachmann] (
Nehemiah 9:26).
2. to attest, testify to, solemnly affirm: 
Acts 20:23; 
1 Thessalonians 4:6; 
Hebrews 2:6; followed by 
ὅτι, 
Acts 10:42; with the dative of person 
to give solemn testimony to one, Luke 16:28; with the accusative of the object 
to confirm a thing by (the interposition of) 
testimony, to testify, cause it to be believed: 
τὸν λόγον τοῦ κυρίου, 
Acts 8:25; 
τὸ εὐαγγέλιον, 
Acts 20:24; 
τὴν βασιλείαν τοῦ θεοῦ, 
Acts 28:23; for all the apostolic instruction came back finally to testimony respecting things which they themselves had seen or heard, or which had been disclosed to them by divine revelation (
Acts 1:21; 
Acts 5:32; 
Acts 10:41; 
Acts 22:18); with the addition of 
εἰς and an accusative of the place unto which the testimony is borne: 
τὰ περὶ ἐμοῦ εἰς Ἱερουσ. 
Acts 23:11; with the addition of a dative of the person to whom the testimony is given: 
τοῖς Ἰουδαίοις τὸν Χριστὸν Ἰησοῦν, the Messianic dignity of Jesus, 
Acts 18:5; 
Ἰουδ. 
τὴν μετάνοιαν καὶ πίστιν, the necessity of repentance and faith, 
Acts 20:21 (
τῇ Ἱερουσ. 
τὰς ἀνομίας, into what sins she has fallen, 
Ezekiel 16:2). 
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