Does the road wind up-hill all the way?
Yes, to the very end.
Will the day's journey take the whole long day?
From morn to night, my friend.
But is there for the night a resting-place?
A roof for when the slow dark hours begin.
May not the darkness hide it from my face?
You cannot miss that inn.
Shall I meet other wayfarers at night?
Those who have gone before.
Then must I knock, or call when just in sight?
They will not keep you standing at that door.
Shall I find comfort, travel-sore and weak?
The second speaker answers that he will meet those who have ‘gone before’, that is have experience of the journey of life.  In other words, it is a process shared by all humanity. 
 As the inn represents heaven, this could suggest that the ‘wayfarers’ have died.
Up-hill