en_tn/2pe/01/17.md

when a voice was brought to him by the Majestic Glory

This can be stated in active form. Alternate translation: "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" (See: rc://en/ta/man/jit/figs-activepassive)

the Majestic Glory, saying

Peter refers to God in terms of his glory. This is a euphemism that avoids using God's name, out of reverence for him. Alternate translation: "God, the Supreme Glory, saying" (See: rc://en/ta/man/jit/figs-metonymy and rc://en/ta/man/jit/figs-euphemism)