Mark 9:1-3

1And Jesus said to them, “I assure you and most solemnly say to you, there are some of those who are standing here who will not taste (experience) death before they see the kingdom of God after it has come with power.”

2Six days later, Jesus took with Him Peter and James and John, and led them up on a high mountain by themselves. And He was transfigured (changed in form) before them [and began to shine brightly with divine and regal glory];

3and His clothes became radiant and dazzling, intensely white, as no launderer on earth can whiten them.