This is the mystery of the seven stars you saw in My right hand and of the seven golden lampstands: The seven stars are the angels of the seven churches, and the seven lampstands are the seven churches.
Textus Receptus (TR) - Revelation 1:20 >τὸ μυστήριον τῶν ἑπτὰ ἀστέρων ὧν εἶδες ἐπὶ τῆς δεξιᾶς μου, καὶ τὰς ἑπτὰ λυχνίας τὰς χρυσᾶς. Οἱ ἑπτὰ ἀστέρες ἄγγελοι τῶν ἑπτὰ ἐκκλησιῶν εἰσί· καὶ αἱ ἑπτὰ λυχνίαι ἃς εἶδες ἑπτὰ ἐκκλησίαι εἰσί.