I am looking for words to a song, but the only consecutive words I remember are "my best friend." I do remember it talking about the Hill at Calvary. Any help is greatly appreciated!!

Chorus is "Yes, oh Yes, I'm a child of the King. His royal blood, now flows through my veins, and I, who was wretched and poor now can sing. Praise God, Praise God, I'm a child of the king."
I'm sorry, that's all I remember!