Who stood with Jesus as He was transfigured - Moses and Elijah. Moses was the one man who had met with God repeatedy such that it made his face shine. Elijah had been with God in heaven in the flesh for centuries (like Enoch too) after he ascended without ever dying. These showed a tremandous potential there is for being with God in the flesh. Jesus had been a kind of angelic human being before becoming flesh and had been like that with God since before time began (pre-existent) long before becoming a flesh and blood normal human by virgin birth. These three show the potential that exists for human fellowship with God and a shining appearance is a sign of it. Nowadays some saintly believers after death can become like angels by God making them that way such that they can do things angels do but yet they are still human - "spirits of just men made perfect". That could be us one day. Then there will be resurrection like Jesus' resurrection too but we haven't got to that bit.
