Who is it?

Who is it, standing there,
Beyond a threshold all will know
And lacking courage,
There find that his will grow

When you ask him, does he not
Seem to hear, ears deaf to nonsense,
Eyes blind to fear

What is there? I cannot see
Each time I draw away, he seems
Only to draw near

Where will he gather you, when all
Questions you have spent?
Perhaps it is there, you shall meet
The willing servant