διδάσκω; imperfect 
ἐδίδασκον; future 
διδάξω; 1 aorist 
ἐδίδαξα; 1 aorist passive 
ἐδιδάχθην; (
ΔΑΩ [cf. Vanicek, p. 327]); [from Homer down]; 
Sept. for 
הודִיעַ, 
הורָה, and especially for 
לִמַּד; 
to teach;
1. absolutely,
a. to hold discourse with others in order to instruct them, deliver didactic discourses: 
Matthew 4:23; 
Matthew 21:23; 
Mark 1:21; 
Mark 6:6; 
Mark 14:49; 
Luke 4:15; 
Luke 5:17; 
Luke 6:6; 
John 6:59; 
John 7:14; 
John 18:20, and often in the Gospels; 
1 Timothy 2:12.
b. to be a teacher (see 
διδάσκαλος, 6): 
Romans 12:7.
c. to discharge the office of teacher, conduct oneself as a teacher: 
1 Corinthians 4:17.
2. in construction;
a. either in imitation of the Hebrew 
לְ לִמַּד (
Job 21:22) or by an irregular use of the later Greeks (of which no well-attested example remains except one in Plutarch, Marcell c. 12), with the dative of person: 
τῷ Βαλάκ, 
Revelation 2:14 (according to the reading now generally accepted for the 
Rec.bez elz τὸν Βαλ.); cf. Buttmann, 149 (130); Winers Grammar, 223 (209), cf. 227 (213).
b. according to the regular use, with the accusative of person, 
to teach one: used of Jesus and the apostles uttering in public what they wished their hearers to know and remember, 
Matthew 5:2; 
Mark 1:22; 
Mark 2:13; 
Mark 4:2; 
Luke 5:3; 
John 8:2; 
Acts 4:2; 
Acts 5:25; 
Acts 20:20; 
τοὺς Ἕλληνας, to act the part of a teacher among the Greeks, 
John 7:35; used of those who enjoin upon others to observe some ordinance, to embrace some opinion, or to obey some precept: 
Matthew 5:19; 
Acts 15:1; 
Hebrews 8:11; with especially reference to the addition which the teacher makes to the knowledge of the one he teaches, 
to impart instruction, instill doctrine into one: 
Acts 11:26; 
Acts 21:28; 
John 9:34; 
Romans 2:21; 
Colossians 3:16; 
1 John 2:27; 
Revelation 2:20.
c. the thing taught or enjoined is indicated by a following 
ὅτι: 
Mark 8:31; 
1 Corinthians 11:14; by a following infinitive, 
Luke 11:1; 
Matthew 28:20; 
Revelation 2:14; 
περί τινος, 
1 John 2:27; 
ἐν Χριστῷ διδαχθῆναι, to be taught in the fellowship of Christ, 
Ephesians 4:21; followed by an accusative of the thing, to teach 
i. e. prescribe a thing: 
διδασκαλίας, 
ἐντάλματα ἀνθρώπων, precepts which are commandments of men (from 
Isaiah 29:13), 
Matthew 15:9; 
Mark 7:7 [Buttmann, 148 (129)]; 
τὴν ὁδὸν τοῦ θεοῦ, 
Matthew 22:16; 
Mark 12:14; 
Luke 20:21; 
ταῦτα, 
1 Timothy 4:11; 
ἂ μὴ δεῖ, 
Titus 1:11; 
to explain, expound, a thing: 
Acts 18:11, 
25; 
Acts 28:31; 
ἀποστασίαν ἀπὸ Μωϋσέως, the necessity of forsaking Moses, 
Acts 21:21.
d. with the accusative of person and of thing, 
to teach one something [Winers Grammar, 226f (212); Buttmann, 149 (130)]: [
ἐκεῖνος ὑμᾶς διδάξει πάντα, 
John 14:26]; 
τοῦ διδάσκειν ὑμᾶς τινα τὰ στοιχεῖα, 
Hebrews 5:12 (where 
R G T Tr and others read — not so well — 
τίνα; [but cf. Buttmann, 260 (224) note, 268 (230) note]); 
ἑτέρους διδάξαι, namely, 
αὐτά, 
2 Timothy 2:2; hence, passive 
διδαχθῆναι τι [Buttmann, 188 (163); Winer's Grammar, 229 (215)]: 
Galatians 1:12 (
ἐδιδάχθην, namely, 
αὐτό), 
2 Thessalonians 2:15. 
    THAYER’S GREEK LEXICON, Electronic Database.
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