θαλασσοκρατεῖν

From LSJ

ἀλλὰ διὰ τῆς ἀγάπης δουλεύετε ἀλλήλοις. ὁ γὰρ πᾶς νόμος ἐν ἑνὶ λόγῳ πεπλήρωται, ἐν τῷ Ἀγαπήσεις τὸν πλησίον σου ὡς σεαυτόν → but be enslaved to each other through love; for the whole Torah is fulfilled in one statement: You will love your neighbor as yourself (Galatians 5:13f.)

Source

Greek > English (Woodhouse Verbs Reversed)

(see also: θαλασσοκρατέω) be supreme at sea, command the sea

Lexicon Thucydideum

maris imperium tenere, to rule the sea, 7.48.2, 8.30.2, 8.41.1.