He is the Way.
Follow Him through the Land of Unlikeness;
You will see rare beasts, and have unique adventures.
He is the Truth.
Seek Him in the Kingdom of Anxiety;
You will come to a great city that has expected your return for years.
He is the Life.
Love Him in the World of the Flesh;
And at your marriage all its occasions shall dance for joy.
And check this out for a bit of commentary on Auden and what he was trying to achieve with this poem (and generally).