Before we are saved, we as lost men and ...women are in bondage to our sin, powerless to break away. As slaves to that sin, we are servants to it.
Romans 6:16 “Know ye not, that to whom ye yield yourselves servants to obey, his servants ye are to whom ye obey; whether of sin unto death, or of obedience unto righteousness?”
“No servant can serve two masters: for either he will hate the one, and love the other; or else he will hold to the one, and despise the other. “(Lk. 16:13 )
Before we are saved, we do not have the freedom or the power to choose another Lord Or Master, because we are slaves to our sin. But when we see our sinful desperate condition as a lost sinner condemned to Hell and turn in faith to Jesus as our Savior, we are purchased by His blood. We are bought with a price, and sealed with the Holy Spirit,” the earnest of our inheritance...”(Eph. 1:14)
We then are no longer slaves to sin as children of the Devil, but are freed from the bondage to sin and become instead sons of God. Although Jesus has been and always will be Lord of all; by his purchase He becomes our rightful owner and our personal Lord as well as our Savior. We then become his willing servants of righteousness.
Romans 6:17 “But God be thanked, that ye were the servants of sin, but ye have obeyed from the heart that form of doctrine which was delivered you.18 Being then made free from sin, ye became the servants of righteousness.”
And now as servants of righteousness, doing the Father’s will, the mind and purpose of Christ, becomes our mind and purpose as well.
Jesus’ Lordship over our lives is evidence of our salvation, evidence of our freedom from our bondage to sin, not the cause. If you are saved, and Jesus still is not your Lord, having rule and reign over your life, or if you are still in bondage as a servant of sin, then it might be an indication that you have not truly been saved yet.