Ignatius — Epistle to the Philadelphians 4
Take heed, then, to have but one Eucharist. For there is one flesh of our Lord Jesus Christ, and one cup to [show forth ] the unity of His blood; one altar; as there is one bishop, along with the presbytery and deacons, my fellow-servants: that so, whatsoever you do, you may do it according to [the will of] God.
Greek
Σπουδάσατε οὖν μιᾷ εὐχαριστίᾳ χρῆσθαι: μία γὰρ σὰρξ τοῦ κυρίου ἡμῶν Ἰησοῦ Χριστοῦ καὶ ἓν ποτήριον εἰς ἕνωσιν τοῦ αἵματος αὐτοῦ, ἓν θυσιαστήριον, ὡς εἷς ἐπίσκοπος ἅμα τῷ πρεσβυτερίῳ καὶ διακόνοις τοῖς συνδούλοις μου: ἵνα, ὃ ἐὰν πράσσητε, κατὰ θεὸν πράσσητε.