Mark 9:4

He said to them, “Most certainly I tell you, there are some standing here who will in no way taste death until they see God’s Kingdom come with power.”

After six days Jesus took with him Peter, James, and John, and brought them up onto a high mountain privately by themselves, and he was changed into another form in front of them.

His clothing became glistening, exceedingly white, like snow, such as no launderer on earth can whiten them.

Peter answered Jesus, “Rabbi, it is good for us to be here. Let’s make three tents: one for you, one for Moses, and one for Elijah.”

For he didn’t know what to say, for they were very afraid.

A cloud came, overshadowing them, and a voice came out of the cloud, “This is my beloved Son. Listen to him.”