When the people heard the thunder and the loud blast of the ram’s horn, and when they saw the flashes of lightning and the smoke billowing from the mountain, they stood at a distance, trembling with fear.
And they said to Moses, “You speak to us, and we will listen. But don’t let God speak directly to us, or we will die!”
“The Lord spoke these words to all of you assembled there at the foot of the mountain. He spoke with a loud voice from the heart of the fire, surrounded by clouds and deep darkness. This was all he said at that time, and he wrote his words on two stone tablets and gave them to me.
“But when you heard the voice from the heart of the darkness, while the mountain was blazing with fire, all your tribal leaders and elders came to me. They said, ‘Look, the Lord our God has shown us his glory and greatness, and we have heard his voice from the heart of the fire. Today we have seen that God can speak to us humans, and yet we live! But now, why should we risk death again? If the Lord our God speaks to us again, we will certainly die and be consumed by this awesome fire. Can any living thing hear the voice of the living God from the heart of the fire as we did and yet survive? Go yourself and listen to what the Lord our God says. Then come and tell us everything he tells you, and we will listen and obey.’
Moses continued, “The Lord your God will raise up for you a prophet like me from among your fellow Israelites. You must listen to him. For this is what you yourselves requested of the Lord your God when you were assembled at Mount Sinai. You said, ‘Don’t let us hear the voice of the Lord our God anymore or see this blazing fire, for we will die.’
Each of these passages describe the people of Israel discovering that God can speak and fellowship with humans. Out of fear, they ask Moses to intercede for them, one "degree of separation". They asked for rules rather than relationship.
Even though we have a new intercessor (Romans 8:26-27), I wonder if we don't often choose a human intercessor rather than relationship (spiritual leaders of all sort). Have we chosen to follow some man-made set of rules rather than to foster a relationship with the triune God.