Clement of Rome, 1 Clement 41
Each of us, brothers, must be pleasing to God in his own rank with a clear conscience, not overstepping the appointed rule of his ministry, and doing so with reverence. Sacrifices of intercession, prayers, or offerings for sin and transgression are not made just anywhere, brothers, but only in Jerusalem — and even there they are not offered in every place, but only before the temple at the altar, after the offering has been examined by the high priest and the ministers already mentioned. Therefore, anyone who acts contrary to God's will incurs the penalty of death. Notice, brothers: the more knowledge we have been deemed worthy of, the more danger we face.
Greek
Ἕκαστος ἡμῶν, ἀδελφοί, ἐν τῷ ἰδίῳ τάγματι εὐαριστείτω τῷ θεῷ ἐν ἀγαθῇ συνειδήσει ὑπάρχων, μὴ παρεκβαίνων τὸν ὡρισμένον τῆς λειτουργίας αὐτοῦ κανόνα, ἐν σεμνότητι. οὐ πανταχοῦ, ἀδελφοί, προσφέρονται θυσίαι ἐνδελεχισμοῦ ἢ εὐχῶν ἢ περὶ ἁμαρτίας καὶ πλημμελείας, ἀλλ’ ἢ ἐν Ἱερουσαλὴμ μόνῃ: κἀκεῖ δὲ οὐκ ἐν παντὶ τόπῳ προσφέρεται, ἀλλ’ ἔμπροσθεν τοῦ ναοῦ πρὸς τὸ θυσιαστήριον, μωμοσκοπηθὲν τὸ προσφερόμενον διὰ τοῦ ἀρχιερέως καὶ τῶν προειρημένων λειτουργῶν. οἱ οὖν παρὰ τὸ καθῆκον τῆς βουλήσεως αὐτοῦ ποιοῦντές τι θάνατον τὸ πρόστιμον ἔχουσιν. ὁρᾶτε, ἀδελφοί: ὅσῳ πλείονος κατηξιώθημεν γνώσεως, τοσούτῳ μᾶλλον ὑποκείμεθα κινδύνῳ.