en_tn/2pe/01/16.md

For we did not follow cleverly invented myths

For we apostles did not follow cleverly made up stories. (See: rc://en/ta/man/translate/figs-exclusive)

our

our - all believers including us apostles. (See: rc://en/ta/man/translate/figs-inclusive)

We heard this voice that came out of heaven,

Peter is referring to himself and the other disciples, James and John, that heard the voice of God. See: (rc://en/ta/man/translate/figs-metonymy)

While we were with him on the holy mountain

Peter is referring to the time when Jesus glowed with bright light in front of Peter, James and John. (See Matthew Matthew 17:1).