2 Peter 1:15-18
1:15 Indeed, I will also make every effort that, after my departure, you have a testimony of these things.
1:16 For we did not follow cleverly concocted fables when we made known to you the power and return of our Lord Jesus Christ; no, we were eyewitnesses of his grandeur.
1:17 For he received honor and glory from God the Father, when that voice was conveyed to him by the Majestic Glory: “This is my dear Son, in whom I am delighted.”
1:18 When this voice was conveyed from heaven, we ourselves heard it, for we were with him on the holy mountain.