I hear the washing trumpet before I see it's tongue

As this ritual plays out as it has since earth was young
Eyes of forever have gazed on curling liquid might
And sought with same humility to enter in the fight
The beating of it's breast of power rumbles in the soul
Drops of foaming eternity spit and take their toll

The walls of my desire rise thick to meet the rage
As if to write a different story on the ancient page
The battle starts with duty felt from places deep within
With the weapons I possess, the struggle can begin
I pick a promising place to make my heartfelt stand
Then dig my mind and fingers in the warm inviting sand

I don't know why I choose to build my castles here
I only know this losing fight is something I don't fear
The effort will be smoothed, soon no trace remains
Yet I know I'll return to sculpt the eternal grains
New walls I'll build in a vain attempt to vanquish time
Knowing just the joy of play is all that will be mine