ἀναδιδάσκειν
From LSJ
τους φίλους λόγων τέχναιν επαίδευσας → Using 2 artifices, you educated (taught) those who love rhetoric.
Greek > English (Woodhouse Verbs Reversed)
(see also ἀναδιδάσκω): instruct, interpret an oracle
Lexicon Thucydideum
edocere, to inform fully, 1.32.1, 3.97.1, 8.86.1.