Although by Night

I am doing a reflection on this poem for my Spiritual Theology class and I am a big fan.

How well I know the spring that brims & flows,
Although by night.
This eternal spring is hidden deep,
How well I know the course its waters keep,
Although by night.
It's source I do not know because it has none
And yet from this, I know, all sources come,
Although by night.
I know that no created thing could be so fair
And that both earth & heaven drink from there,
Although by night.
I know its depths possess no bed to fathom
And that none may ford across or sound them,
Although by night.
Its radiance is never clouded, and in this
I know that all light has its genesis,
Although by night.
I know its currents carry such abundance
They water hell & heaven & all nations,
Although by night.
The current welling from this fountain's source
I know to be as mighty in its force,
Although by night.
And from these two proceeds another stream.
I know that neither over this one reigns su­preme,
Although by night.
This eternal fountain is concealed from sight
Within this living bread to give us life,
Although by night.
And here is calling out to all the creatures,
These waters quench their thirst, although by darkness
Because they lie in night.
I long for this, the living fountain-head,
I see it here within the living bread,
Although by night.

St. John of the Cross