Quick Definition
πιστόω v. I convince, give assurance to
Strong's Definition
from 4103; to assure
KJV Usage: assure of
UBS Dictionary of the Greek New Testament
verb | πιστεύω
31.36 · (πιστόομαι) · Hold a View, Believe, Trust · Believe To Be True
to come to believe to come to believe something to be true
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
πιστόω, -@: 1 aor. pass. ἐπιστώθην;; (πιστός); 1, to make faithful, render trustworthy: τὸ ῥῆμα, 1 K. i. 36; τινὰ ὅρκοις, Thue. 4, 88; univ. to make firm, establish, 1 Chr. xvii. 14. 2. Pass. (Sept. in various senses for JPN) and mid. to be firmly persuaded of; to be assured of: τί (Opp. eyn. 8, 855.417; Lcian. philops. 5), 2'Tim. iii. 14; Hesych. ἐπιστώθη - ἐπείσθη, ἐπληροφορήθη. (In various other senses in prof. auth. fr. Hom. down.)
Mounce Concise Greek Dictionary
πιστόω pistoō 1x
to make trustworthy; pass. to be assured, feel sure belief, 2 Tim. 3:14*
Abbott-Smith Greek Lexicon
πιστόω, -ῶ
(< πιστός), [in LXX chiefly for אמן ni.;]
to make trustworthy (Thuc., III Ki 1:36), hence, to establish (I Ch 17:14). Pass. and mid., to be assured of: c. acc. rei, II Ti 3:14.†
Moulton & Milligan — Vocabulary of the Greek NT
πιστόω occurs in the pass. in the sense ‘‘am assured Ofieanin 2 Tim 315: cf. 3 Macc 42° and the τ... in 2 Thess 17° (cf. WH WNoves?, p. 128). For the mid. see Sy//8 63377 (2: B.C. 180) εἶναι αὐτοὺς ἀτελεῖς πιστωσαμένους ὅρκωι, διότι ἐπὶ κτήσει ποιοῦνται τὴν διαγωγήϊν. A good ex. of the NT use of the verb is afforded by Aristeas 91 πεπεισμένος δὲ kal αὐτὸς τὴν τῶν ὑποδοχείων κατασκευὴν δηλώσω, καθὼς ἐπιστώθην, “such is my belief as to the nature of the reservoirs, and I will explain how it was confirmed ” (Thackeray). We may note the late compd. πιστοφορέω (not in LS*): P Lond IV. 1338!° (A.D. 709) πιστοφορέθητι εἰς τοῦτο, “be sure of that.” For the rare subst. πίστωμα, see Linde Zfzc. p. 16f.
Liddell-Scott-Jones — Greek-English Lexicon
πιστόω (pistoō) — be convinced. πιστόω, make trustworthy, πιστοῦν τινα ὅρκοις bind him by oaths, [Refs 5th c.BC+]
II. passive, to be made trustworthy, give a pledge or warrant, πιστωθείς [Refs 5th c.BC+]; μοι.. ὅρκῳ πιστωθῆναι ἀπήμονά μ᾽ οἴκαδ᾽ ἀπάξειν bind yourselves to me by oath.., [Refs 8th c.BC+]
II.2. feel trust or confidence, to be persuaded, ὄφρα.. πιστωθῆτον ἐνὶ θυμῷ [Refs]; πιστωθεὶς ὅτι.. feeling confidence that.., [Refs 5th c.BC+]
III. middle, give mutual pledges of fidelity, exchange troth, χεῖράς τ᾽ ἀλλήλων λαβέτην καὶ πιστώσαντο [Refs 8th c.BC+]
III.2. πιστοῦσθαί τινα ὑφ᾽ ὅρκου secure his good faith by oaths, [Refs 5th c.BC+]
III.3. confirm, prove, τῷ παρόντι τοὐπιόν [Refs 5th c.BC+]; guarantee, τι [Refs 2nd c.BC+]; τι διότι.. [Refs 3rd c.BC+]; μάρτυρι τῷ Νέρωνι, ὅτι.. [Refs 2nd c.AD+]; τίς ἂν τάδε πιστώσαιτο,.. ὅτι..; [LXX+4th c.BC+]