φιλοψυχέω
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.)
English (LSJ)
A love one's life, with collat. sense of to be cowardly or faint-hearted, Tyrt.10.18, E.Hec.315, Heracl.518,533, D.60.28, etc.; φ. ὑπὲρ τῆς ἀρετῆς Lys.2.25.