διδαχή, ἡ, -ῆς
教導 teaching (διδαχη-, 30, didactic = 教導的)

 例句 
太1:18 ὅτε ἐτέλεσεν ὁ Ἰησοῦς τοὺς λόγους τούτους, ἐξεπλήσσοντο οἱ ὄχλοι ἐπὶ τῇ διδαχῇ αὐτοῦ.
When Jesus finished these words, the crowds were being amazed on his teaching.
(耶穌講完了這些話,羣眾都對祂的教導感到希奇)

徒5:28 ἰδοὺ πεπληρώκατε τὴν Ἰερουσαλὴμ τῆς διδαχῆς ὑμῶν.
Behold, you have filled Jerusalem with your teaching.
(看哪,你們倒把你們的道理充滿了耶路撒冷)

 同根字 
διδάσκω, διδάσκαλος, διδασκαλία, διδακτικός, διδακτός