¿Whom Do You Serve?

Did you know that I've always loved you and still do!
my strength is found in your weaknesses.
I am the light to your feet, that lights up your way?
I gave out all I had for me to get in touch with you.
I carried all your burdens up high the cross, for you to walk straight testifying all I had done for you!
But what do you Repay me for all I've done for you my Son/Daughter?