“Καλεῖ ἡμᾶς εἰς σωτηρίαν. τὸ "ἐπιστραφήσονται" δείκνυσιν ὅτι οὐδεὶς κατὰ οὐσίαν κακός ἐστιν, ἀλλὰ κατὰ προαίρεσιν. εἰ δὲ ἴσχυσεν τὸ κακὸν ἐλάσαι τὴν προαίρεσιν εἰς ἄλλο τι ἄλλως, ἰσχύσει τὸ ἀγαθὸν ἀνακαλέσασθαι αὐτὴν εἰς τὴν προτέραν κατάστασιν.

He calls us to salvation. The verb "they will return/convert" indicates that nobody is evil by essence, by nature, but rather by free choice. But if evil had the power to push the [human] free choice toward something else, something alien, the Good will have the power to call it back to its original condition. (Didymus, Comm. In Ps. 20-21 col. 54.20)”