This lesson covers a beautiful sequence of scriptures, starting with Psalm 2.
Yet have I set my king upon my holy hill of Zion.
I will declare the decree: the Lord hath said unto me, Thou art my Son; this day have I begotten thee. KJV
Let’s take care of the matter of Zion first because we will see three of them in these passages. The citation above regards Jerusalem, a city built near Zion, the peak west of the old city. Mount Moriah is the site of the city. However, the Mount Zion title is loosely associated with the city. In fact, there are passages which speak of both Zion and Moriah as though they are interchangeable.
The account of Moses on Mount Sinai gives us a second high place which serves as a Zion, a holy Mountain where God speaks to His people. We see all the godly trappings of the cloud and what appeared to be fire on the top. The voice of God was heard to come from the cloud.
The Matthew and Peter readings deal with the same event, but on an unnamed mountain. Mt. Tabor is the traditional site, but there was a Roman fort on top of the mountain, so not a likely site for the transfiguration.
It is not important that we know which mountain was involved, only that what happened there was a reproduction of what happened to Moses. Therefore, it is also a kind of Zion.
Moses went into the cloud when called in by God where he received the entire set of commandments for how the Chosen People of God were to live their lives. It took a month for Moses to get it all down.
Jesus began to glow and then Moses and Elijah appeared beside him. Only after that did the Holy cloud appear and the voice of God came from the cloud.
There should be no doubt in our minds that God handpicked Moses and Jesus in much the same way.
Add to the case of Jesus the words, “This is my dearly loved Son in whom I am well pleased. Listen to him!” Phillips Peter quoted most of it: “This is my Son, whom I love; with him I am well pleased.” NIV
Be righteous and do good.