After God enters the newly rebuilt Temple in Ezekiel's vision, he tells Ezekiel that no one else is allowed to enter by that gate:
The Lord said to me: This gate shall remain shut; it shall not be opened, and no one shall enter by it; for the Lord, the God of Israel has entered by it; therefore it shall remain shut. (44:2)
The symbolism's pretty straightforward: the ways of God aren't the ways of human beings. They're meant to enter and experience life differently from God, and can't tread the same path or walk through the same gate that he passes through. Kind of like that first-class airplane cabin or VIP lounge you've only dreamed about getting into.