Cain's Grief

ΕΡΩΤ ΚΜΑ’ Εἰ ἐλυπήθη Κάϊν μὴ δεχθέντων τῶν παρ' αὐτοῦ προσενεχθέντων, δῆλον ὅτι μετεμελήθη· τῶν γὰρ μεταμελουμένων ἡ λύπη. Ἠνίασεν αὐτὸν οὐχ ἡ αὐτοῦ πλημμέλεια, ἀλλ' ἡ τοῦ ἀδελφοῦ εὐπραξία. Τοῦτο γὰρ καὶ ὁ Ἀκύλας ᾐνίξατο· ἔφη δὲ οὕτως, Καὶ ὀργίλον τῷ Κάϊν σφόδρα, καὶ ἔπεσε τὸ πρόσωπον αὐτοῦ. Καὶ εἶπε Κύριος πρὸς Κάϊν, Εἰς τί τὸ ὀργίλον σοι. Θεοδώρητος Ἐπίσκοπος Κύρρος, Εἰς Τὴν Γένεσιν Source: Migne PG 80.143b

Question 41 If Cain grieved because his offerings were not accepted, therefore he was penitent, for penitence is sorrowful. He was not anguished because of his own fault, but because of the good of his brother. To this Aquila alludes when he translates it in this way: 'And Cain was gravely angered, and he cast down his face. And the Lord said to Cain, 'Why are you angry?' 1 Theodoret of Cyrrhus, Questions On Genesis 1 Gen 4.5-6