ἀληθ-εύω, fut. -εύσω X. Mem. 1.1.5, al.: -
1. speak truth, A. Th. 562, Hp. Prog. 15, Pl. R. 589c; περί τι Id. Tht. 202b: with neut. Adj., ἀ. πάντα speak truth in all things, Batr. 14; πολλὰ ἀ. X. An. 4.4.15; τὰς δέκα ἡμέρας ἠλήθευσε he rightly foretold.., ib. 5.6.18; ἀ. τοὺς ἐπαίνους prove their praises true, Luc. Ind. 20; τοὔνομα `make good’, Them. Or. 1.4c.
2. of things, to be, prove true, σημεῖα Hp. Prog. 25: - Pass., to be fulfilled, of conditions, ἐπὶ τούτοις -ομένοις X. Cyr. 4.6.10, freq. in Arist.: - Act. of reasoners, arrive at truth, Id. Metaph. 1062a25: - Pass., ὁ λόγος -εύεται is in accordance with truth, Top. 132b4, al.; ἀληθεύεσθαι κατά τινος to be truly predicated of.., ib. 132a31, al.: fut. Med. in same sense, EN 1100a35, al.
G226 — ἀληθεύω
in secular writings ((Aeschylus), Xenophon, Plato, Aristotle, others) to speak the truth;
a. to teach the truth: τίνι [Gal 4:16].
b. to profess the truth (true doctrine): [Eph 4:15]. (R. V. marginal reading in both passages, to deal truly.)
ἀληθεύω
( < ἀληθής ),
[in LXX : [Gen 20:16] (H3198) [Gen 42:16] (H571), [Pro 21:3] (H4941), [Isa 44:26] (H7999), Sir 34:4 * ;]
to speak the truth ( R , mg ., deal truly; Field, Notes , 192): [Gal 4:16], [Eph 4:15]. †