διαμνημονεύειν

From LSJ

ἔστ' ἦμαρ ὅτε Φοίβος πάλιν ελεύσεται καὶ ες αεί ἔσσεται → the time will come when Apollo will return to stay forever

Source

Lexicon Thucydideum

recordari, to remember vel or commemorare, to relate, 1.22.1.