The genitive is used with verbs signifying to fill, to be full of. The thing filled is put in the accusative.
οὐκ ἐμπλήσετε τὴν θάλατταν τριήρων
; will you not cover the sea with your triremes? 8.74, ἀναπλῆσαι αἰτιῶν
to implicate in guilt A. 32c, τροφῆς εὐπορεῖν
to have plenty of provisions Vect. 6.1, τριήρης σεσαγμένη ἀνθρώπων
a trireme stowed with men O. 8.8, ὕβρεως μεστοῦσθαι
to be filled with pride L. 713c. So with πλήθειν, πληροῦν, γέμειν, πλουτεῖν, βρῑ́θειν (poet.), βρύειν (poet.).
a. Here belong also χεὶρ στάζει θυηλῆς Ἄρεος
his hand drips with sacrifice to Ares El. 1423, μεθυσθεὶς τοῦ νέκταρος
intoxicated with nectar S. 203b, ἡ πηγὴ ῥεῖ ψῡχροῦ ὕδατος
the spring flows with cold water Phae. 230b. The instrumental dative is sometimes used.