We have not depended on made-up stories in making known to you the mighty coming of our Lord Jesus Christ. With our own eyes we saw his greatness.
We were there when he was given honor and glory by God the Father, when the voice came to him from the Supreme Glory, saying, "This is my own dear Son, with whom I am pleased!" 1
References for 2 Peter 1:17
1.17, 18 Mt 17.1-5; Mk 9.2-7; Lk 9.28-35.
We ourselves heard this voice coming from heaven, when we were with him on the holy mountain.