i finally found it (giving myself a pat on the back).

Timeless by Selah

Time, it's changing me
It's hard to see who I am
Touched, I'm touched by many things
So many things I don't understand

But seasons pass and I discover
Above all this there's another
Helping me to hold on to what is timeless

So the autumn can color me gold
And the winter can dress me in snow
But it's You I see
The Timeless part of me
In the springtime I'm young once again
In the summer I dance on the wind
But it's You I see
The Timeless part of me

Change, whether it's good or bad
You know I'm glad You're in control
Oh Lord, if I don't understand
I know Your hand will shield my soul

Seasons pass and I discover
Above all this there's another
Helping me to hold on to what is timeless