AGuest, thank you for your expanded explanation of your being a slave of Christ. The confusion centers on the understanding of the word slave. You choose to follow Christ but are free to leave if you choose.
Slavery involves the loss of the freedom to choose to stay or leave. That is the privilege of servants or those that have won their freedom. To follow Christ is understandable but to be a slave of Christ infers a lack of choice.
Being a king or a priest of Christ could appeal to appeal to my ego but the idea of slavery scares me. I guess I am just made of the wrong stuff.
Your humble servant Trevor