ἀποστατήρ
From LSJ
Οὕτως γὰρ ἠγάπησεν ὁ Θεὸς τὸν κόσμον, ὥστε τὸν Υἱὸν τὸν μονογενῆ ἔδωκεν, ἵνα πᾶς ὁ πιστεύων εἰς Αὐτὸν μὴ ἀπόληται ἀλλ᾽ ἔχῃ ζωὴν αἰώνιον → For God so loved the world that he gave his only begotten Son that whosoever believeth in him should not perish but have everlasting life (John 3:16)
English (LSJ)
ῆρος, ὁ,
A one who has power to dissolve an assembly, or to decide a question, Lex Lyc. ap. Plu.Lyc.6; cf. ἀφίστημι.