Well, Matthew’s account of the transfiguration is pretty visual:
:bible1: "After six days Jesus took Peter, James, and John his brother, and led them up a high mountain by themselves. And he was transfigured before them; his face shone like the sun and his clothes became white as light. And behold, Moses and Elijah appeared to them, conversing with him. Then Peter said to Jesus in reply, “Lord, it is good that we are here. If you wish, I will make three tents here, one for you, one for Moses, and one for Elijah.” While he was still speaking, behold, a bright cloud cast a shadow over them, then from the cloud came a voice that said, “This is my beloved Son, with whom I am well pleased; listen to him.” When the disciples heard this, they fell prostrate and were very much afraid. But Jesus came and touched them, saying, “Rise, and do not be afraid.” And when the disciples raised their eyes, they saw no one else but Jesus alone. As they were coming down from the mountain, Jesus charged them, “Do not tell the vision to anyone until the Son of Man has been raised from the dead.” Matthew 17:1-9
For the Proclamation of the Kingdom, the focus is on Christ’s actions, the signs He gave that the Kingdom was at hand. From Pope John Paul II’s
Rosarium Virginis Mariae:
Another mystery of light is the preaching by which Jesus proclaims the coming of the Kingdom of God, calls to conversion (cf. Mk 1:15) and forgives the sins of all who draw near to him in humble trust (cf. *Mk *2:3-13; *Lk *7:47- 48): the inauguration of that ministry of mercy which he continues to exercise until the end of the world, particularly through the Sacrament of Reconciliation which he has entrusted to his Church (cf. *Jn *20:22-23).
Hope this helps