Luke 9:23-29

And he said unto all, If any man would come after me, let him deny himself, and take up his cross daily, and follow me. For whosoever would save his life shall lose it; but whosoever shall lose his life for my sake, the same shall save it. For what is a man profited, if he gain the whole world, and lose or forfeit his own self? For whosoever shall be ashamed of me and of my words, of him shall the Son of man be ashamed, when he cometh in his own glory, and the glory of the Father, and of the holy angels. But I tell you of a truth, There are some of them that stand here, who shall in no wise taste of death, till they see the kingdom of God. And it came to pass about eight days after these sayings, that he took with him Peter and John and James, and went up into the mountain to pray. And as he was praying, the fashion of his countenance was altered, and his raiment became white and dazzling.