This month I am reading Slave by John MacArthur for my book of the month. Here are a couple quotes from the book.
"The Gospel is not simply an invitation to become Christ's associate; it is a mandate to become His slave."
"True Christianity is not about adding Jesus to my life. Instead, it is about devoting myself completely to Him - submitting wholly to His will and seeking to please Him above all else. It demands dying to self and following the Master, no matter the cost. In other words, to be a Christian is to be Christ's slave."