This song is based on the last few verses of Psalm 73. It's one of my wife's favorites.
Ps. 73:25-28
25 Whom have I in heaven but you?
And earth has nothing I desire besides you.
26 My flesh and my heart may fail,
but God is the strength of my heart
and my portion forever.
27 Those who are far from you will perish;
you destroy all who are unfaithful to you.
28 But as for me, it is good to be near God.
I have made the Sovereign Lord my refuge;
I will tell of all your deeds.

For the guitarists out there:

D G A
Whom have I in heaven?
D G A D
What on earth can satisfy?
D A/C# Bm Em
My heart and flesh may fade away
G A D
But You are my desire
Bm A/C# D
You sustain the world with Your goodness
Em G A
You give breath to life
D A/C# Bm Em
You, Oh Lord, are my hiding place
G A D
I will tell of all You've done.
Hope you enjoy it. Be blessed!