The Bible is not an argument for God. The Bible is stories about encountering God. It is not easy to speak, let alone write about such experiences, because they transcend normal categories of thought and description. Notice that Luke concludes his story by saying that the disciples who had experienced the transfiguration remained silent. So profound is the encounter that we speak about it with difficulty even to those with whom we are intimate.
Awed silence is the customary response to the experience of the sacred.
Here is an attempt to describe a religious experience, a writing that comes not from the Bible but from the Christian tradition. It is from St. Augustine, who 1600 years ago wrote this. You were within me, yet I had gone outside to seek you. Unlovely myself, I rushed toward all those lovely things you had made. And always you were with me, I was not with you.