Parallel
Hebrews 12:19
Robinson-Pierpont Byzantine Textform · Berean Standard Bible
καὶ σάλπιγγος ἤχῳ, καὶ φωνῇ ῥημάτων, ἧς οἱ ἀκούσαντες παρῃτήσαντο μὴ προστεθῆναι αὐτοῖς λόγον·
to a trumpet blast or to a voice that made its hearers beg that no further word be spoken.