ἀφ' ἑαυτοῦ γνώμης
From LSJ
καὶ ἐχθροὶ τοῦ ἀνθρώπου οἱ οἰκιακοὶ αὐτοῦ → and a man's foes shall be they of his own household (Micah 7:6, Matthew 10:36)
Greek > English (Woodhouse)
on his own initiative, on one's own authority, on one's own responsibility