Canon 35
On anathema to heretics who worship Angels instead of Christ.
About the fact that Christians should not leave the Church of God, withdraw from it and call on angels and organize meetings, which is prohibited. So, if anyone is found to be engaged in this secret idolatry, let him be anathema, because he has abandoned our Lord Jesus Christ, the Son of God, and given himself over to idolatry.
Greek original
Ὅτι οὐ δεῖ Χριστιανοὺς ἐγκαταλείπειν τὴν ἐκκλησίαν τοῦ Θεοῦ, καὶ ἀπιέναι, καὶ ἀγγέλους ὀνομάζειν, καὶ συνάξεις ποιεῖν, ἅπερ ἀπηγόρευται. Εἴ τις οὖν εὑρεθῇ ταύτῃ κεκρυμμένῃ εἰδωλολατρείᾳ σχολάζων, ἔστω ἀνάθεμα, ὅτι ἐγκατέλιπε τὸν Κύριον ἡμῶν Ἰησοῦν Χριστόν, τὸν Υἱὸν τοῦ Θεοῦ, καὶ εἰδωλολατρείᾳ προσῆλθεν.