I was in the Spirit on the Lord’s day, and heard behind me a great voice, as of a trumpet,
Berean Study Bible (BSB) - Revelation 1:10 >On the Lord’s day I was in the Spirit, and I heard behind me a loud voice like a trumpet,
Textus Receptus (TR) - Revelation 1:10 >Ἐγενόμην ἐν πνεύματι ἐν τῇ κυριακῇ ἡμέρᾳ· καὶ ἤκουσα ὀπίσω μου φωνὴν μεγάλην ὡς σάλπιγγος,