Where can I find the piano music for this hymn? Need for a memorial service.

Hi misnomerga

I think these are the lyrics

My Cathedral

I built a cathedral deep down in my heart,
where God holds His counsel with me.
And no one on this earth can visit me there,
for I have the only known key.

Ev'ry morning and night I am kneeling
at my altar where love guides the way.
And my prayers bring the help and the strength
I need to carry life's burdens each day.

In my own cathedral I built long ago,
there's comfort the world cannot find;
For there I'm alone with the powers that be,
at peace with the world and mankind.

Ev'ry one in the world should be building a cathedral,
no matter how big or how small,
For our Savior is waiting to greet us there,
with God's endless love for us all.

Cannot find the lyrics to this hymn anywhere - would someone possibly have them.
I believe the authors are McNeill, Don. and Rossiter, Will. and Blaufuss, Walter.