ἐρίηρος
From LSJ
οὕτως ἔσονται οἱ ἔσχατοι πρῶτοι καὶ οἱ πρῶτοι ἔσχατοι· πολλοὶ γάρ εἰσι κλητοί, ὀλίγοι δὲ ἐκλεκτοί → so the last shall be first and the first last for many be called but few chosen
English (LSJ)
ον, as epith. of ἑταῖρος, perh.
A faithful, trusty (μεγάλως τιμώμενοι κτλ., Hsch.), ἐ. ἑταῖρος, in sg., only in Il. 4.266 : elsewh. always in heterocl. pl. ἐρίηρες ἑταῖροι, acc. ἐρίηρας ἑταίρους or ἑτάρους ἐρίηρας, Od.9.100, Il.3.47, etc.; parodied by Cratin. 143 ; ἐρίηρος ἀοιδός loyal to his master's house, Od.1.346, al.