παρέχειν ἑαυτόν
From LSJ
Ubi idem et maximus et honestissimus amor est, aliquando praestat morte jungi, quam vita distrahi → Where indeed the greatest and most honourable love exists, it is much better to be joined by death, than separated by life.
Greek > English (Woodhouse)
acquit oneself, hand oneself over to, make oneself, prove oneself, quit oneself, resign oneself to, show oneself, throw oneself on