2 Peter 1:18

‘And this voice we ourselves heard borne out of heaven, when we were with him in the holy mount.'

And what was more the voice had been heard by them all. They had heard it borne to them out of heaven, when they were with Him in the holy mount. And it had been a real voice heard and decipherable by each of them.

The description of the mount as a ‘holy mount' is also an evidence of genuineness. There is no hint anywhere that any mount was especially honoured by the early church. But to the three the mount could never again be thought of except with awe. It would have reminded them of the glory of God revealed on Mount Sinai. In their minds this mountain had replaced the holy mountain of Jerusalem, for here the glory of the Lord had been revealed, the One Who was God's new Temple (John 2:19; John 2:21). To them it was the holiest place on earth.