ἐπεποίθειν

From LSJ

αὐτῇ τῇ ψυχῇ αὐτὴν τὴν ψυχὴν θεωροῦντα ἐξαίφνης ἀποθανόντος ἑκάστου → beholding with very soul the very soul of each immediately upon his death

Source

Greek Monotonic

ἐπεποίθειν: υπερσ. του πείθω.