This song came to mind today after many decades. Thank you for posting tge words. Looking unto Jesus our Good Shepherd.

Though some may sing to pass the weary night along,
Though some may sing to entertain a worldly throng,
I sing because I worship God in song;
It's in my heart, it's in my heart.

CHORUS
It's in my heart this melody of love divine;
It's in my heart since I am His and He is mine.
It's in my heart, how can I help but sing and shine
It's in my heart, it's in my heart.

You ask me why I know His blood can cleanse alone;
You ask me why I know He sits upon the throne,
And why I know He chose me for His own;
It's in my heart, it's in my heart.

You ask me how I find the time to read and pray.
You ask me how I smile when things are far from gay,
And how I sing His praises, come what may;
It's in my heart, it's in my heart.

I may not know the skilful use of tongue or pen,
to prove my Lord's return to unbelieving men,
But this I know He's coming back again;
It's in my heart, it's in my heart.

please find this song for me