1. You may wonder why it is I'm always happy
You may wonder why I'm singing all the day long,
You may wonder at the joy within my being
That can only find expression in my song.

Chorus
It is Jesus, only Jesus
It is Jesus in my heart

2. You may wonder why I seek no earthly treasure,
And the luxury that gold alone can buy,
You may wonder why I crave no worldly pleasure,
If you listen I will tell you why.