en_tn_condensed/2pe/01/17.md

when a voice was brought to him by the Majestic Glory

"when he heard a voice come from the Majestic Glory" or "when he heard the voice of the Majestic Glory speak to him" or "when the Majestic Glory spoke to him"

the Majestic Glory, saying

This is a euphemism that avoids using God's name, out of reverence for him. Alternate translation: "God, the Supreme Glory, saying"