I'm reading Alfred Poirer's The Peacemaking Pastor (Grand Rapids: Baker, 2006). He has a great insight on the close echoes between Exodus 33-34 and John 1:1-17.
The Quest to see God: Exodus 33:18 with John 1:8
God dwelling with his people: Exodus 33:14 with John 1:14
The Revelation of God's glory: Exodus 33:18; 34:5 with John 1:14
God's glory is grace and truth: Exodus 34:5-6 with John 1:16-17
John's point? Moses' request to see God's glory is finally and fully answered in the incarnation of God's one and only Son.