ἐπίσταμαι (seems to be the Ionic form of the middle of ἐφίστημι. Isocrates, Aristotle, others, also use ἐπιστῆσαι τήν διάνοιαν, τόν νοῦν, ἑαυτόν for to put one's attention on, fix one's thoughts on; indeed, the simple ἐπιστῆσαι is used in the same sense, by an ellipsis analogous to that of τόν νοῦν with the verbs προσέχειν, ἐπέχειν, and of τήν ὄψιν with προσβάλλειν; see Lobeck ad Phryn., p. 281f Hence, ἐπίσταμαι is properly, to turn oneself or one's mind to, put one's thought upon a thing); from Homer down; the Sept. chiefly for ιΘγΗς ; (cf. German sichworaufverstehen); a. to be acquainted with: τί, Act_18:25; Jas_4:14; Jud_1:10; τινα, Act_19:15; with reference to what is said or is to be interpreted, to understand: Mar_14:68; 1Ti_6:4. b. to know: περί τίνος, Act_26:26; followed by an accusative with a participle Act_24:10 (Winers Grammar, 346 (324); Buttmann, 301 (258)); followed by ὅτι, Act_15:7; Act_19:25; Act_22:19; followed by ὡς, Act_10:28; by πῶς, Act_20:18; by ποῦ, Heb_11:8. (Synonym: see γινώσκω.) STRONGS NT 1987a: ἐπίστασιςἐπίστασις, ἐπιστασεως, ἡ (ἐφίστημι, ἐφισταμαι), an advancing, approach; incursion, onset, press: τῆς κακίας (Vulg.malorumincursio), 2Ma_6:3, where cf. Grimm; used of the pressure of a multitude asking help, counsel, etc., τίνι (on which dative cf. Winers Grammar, § 31, 3; (Buttmann, 180 (156)); Kühner, § 424, 1) to one, 2Co_11:28 L T Tr WH (but others would have us translate it here by oversight, attention, care, a common meaning of the word in Polybius); used of a tumultuous gathering in Act_24:12 L T Tr WH. Cf. Buttmann, as above

ἐπίσταμαι epistamai 14x to be versed in, to be master of, 1Ti_6:4 ; to be acquainted with, Act_18:25 ; Act_19:15 ; Jud_1:10 : to know, Act_10:28 ; to remember, comprehend, understand, Mar_14:68 know; understand. ἐπίστασις epistasis 2x pr. care of, attention to, 2Co_11:28

ἐπίσταμαι (prob. an old mid , of ἐφίστημι , q . v .), [in LXX chiefly for H3045 ;] to know, know of, understand: c . acc pers ., Act_19:15 ; c . ptcp ., Act_24:10 ; c . acc rei , Mar_14:68 , Act_18:25 , 1Ti_6:4 , Jas_4:14 , Jud_1:10 ; seq . περί , Act_26:26 ; ὅτι , Act_15:7 ; Act_19:25 ; Act_22:19 ; ὡς , Act_10:28 ; πῶς , Act_20:18 ; ποῦ , Heb_11:8 .† SYN: γινώσκω G1097 ( q . v .), οἶδα G1492

ἐπίσταμαι [page 245] For this verb, which is common in Ac, it is sufficient to cite P Hib I. 40 .6 (B.C. 261) ἐπίστασο μέντον ( l. -οι ) ἀκριβῶς , you must clearly understand, P Tebt II. 408 .3 (A.D. 3) ἐπιστάμενος πῶς σε τίθεμαι κὲ φιλῶ , since you know how I esteem and love you (Edd.), P Ryl II. 243 .6 (ii/A.D.) καὶ νῦν ἐπιστάμεθά σου τὸ σπουδαῖον , P Leid W xix. 9 (ii/iii A.D.) ἐπικαλοῦμαί σε (a god) . . ὃν οὐδεὶς ἐπίσταται , ὃν οἱ (θεοί or ἄγγελοι ) προσκυνοῦσιν , P Oxy VIII. 1121 .21 (A.D. 295) τίνι ἐπα̣γόμενοι οὐκ ἐπίσταμαι , on what inducement I cannot tell (Ed.), and the common phrase regarding an illiterate person διὰ τὸ μὴ ἐπίστασθαι γράμματα , as in P Ryl II. 73 .19 (B.C. 33 30) : cf. P Tebt II. 291 .41 (A.D. 162) ἀπ ]ο̣δε̣ι̣ξι̣ν δοὺς τοῦ ἐπίστασθαι [ἱε ]ρατικὰ [καὶ ] Αἰγύπτια γράμ [ματ ]α . See also Syll 726 .54 (B.C. 301 0) εἰδότες ὅτι ἐπίστανται χάριτας ἀποδιδόναι οἱ θιασῶται . The acc. of the person (as in Act_19:15 ), which LS 8 ( s.v. II. 3) describe as rare, is used by Musonius p. 12 .5 , where he characterizes τὴν φιλοσοφοῦσαν as παράδειγμα . . χρηστὸν ταῖς ἐπισταμέναις αὐτήν : see also P Leid cited supra.

ἐπίσταμαι [Etym: prob. = ἐφίσταμαι] Dep.: c. inf. "to know" how to do, "to be able" to do, "capable" of doing, Hom. , attic "to be assured or believe that" a thing is, Hdt. c. acc. "to understand" a matter, "know, be versed in or acquainted with", Hom. , etc.:—after Hom. "to know" as a fact, "know for certain, know well", Hdt. , attic rarely, "to know" a person, Eur. c. part., "to know that" one is, has, etc., Hdt. , attic part. pres. ἐπιστάμενος, η, ον, is often also used as an adj. "knowing, understanding, skilful", Hom. :—c. gen. "skilled or versed" in a thing, id=Hom. :—adv. ἐπισταμένως, "skilfully, expertly", id=Hdt. , Hes.

ἐπίσταμαι (prob. an old mid, of ἐφίστημι, which see), [in LXX chiefly for יָדַע ;] to know, know of, understand: with accusative of person(s), Act.19:15; with ptcp., Act.24:10; with accusative of thing(s), Mrk.14:68, Act.18:25, 1Ti.6:4, Jas.4:14, Ju 10; before περί, Act.26:26; ὅτι, Act.15:7 19:25 22:19; ὡς, Act.10:28; πῶς, Act.20:18; ποῦ, Heb.11:8.† SYN: γινώσκω (which see), οἶδα (AS)