A Mindless Divorce

Ἐῥῥέθη δὲ ὅτι ὃς ἄν ἀπολύσῃ τὴν γυναῖκα αὐτοῦ, δότω αὐτῇ ἀποστάσιον... Ὁ τὴν σώφρονα ἐκβάλλων δίδωσιν αὐτῇ ἄδειαν ἄλλῳ γαμηθῆναι, ὅπερ ἐστὶν εἴδος μοιχείας, ὠσανεὶ μὴ λυθείσης συζυγίας· οὐ γὰρ τὰ ῥεποὺδια παρὰ Θεῷ λύει τὸν γάμον, ἀλλ' ἡ ἄτοπος πρᾶξις. Ἅγιος Κύριλλος Ἀλεξανδρείας, Ἐξὴγησις Εἰς Τὸ Κατὰ Ματθαιον Εὐάγγελιον Source:  Migne PG 72.380d

And it was said that whoever would dismiss his wife, let him give her a bill of divorce... 1   He who casts out wisdom and gives her freedom to be married to another, this is a type of adultery, for it is not as if the bond is broken; no bill of divorce releases from the marriage to God, but it is an irrational act. Saint Cyril of Alexandria, Commentary On The Gospel Of Saint Matthew, Fragment 1 Mt 5.31