Jesus suffered torturous mutilation when He died to pay for our sins. People who believe they have received Christ but retained their own will have attempted to mutilate Him all over again. They have tried to substitute a part of themselves (their will) for a part of Him (His will). His will is more spiritually relevant than His body parts. Our will is the part of us that is sinful. People would not dream of cutting off one of Jesus* hands or feet but they are willing to routinely and callously amputate His will.
2 Corinthians 5:17: Therefore if any man be in Christ, he is a new creature: old things are passed away; behold, all things are become new.
When all things are become new for a person, one new thing for them is a new will. People need to receive the complete Jesus Christ who wants to recreate them with a righteous will that desires to please Him rather than itself.
It would be better if we would mutilate ourselves than Christ. It would be better if we would completely amputate our sinful, ugly, ignorant and rebellious will and have it replaced with His beautiful, wise and submissive will. Jesus puts a new will in us when He saves us but He doesn*t immediately remove our old fleshly will. For some wise reason unknown to us He lets our new will battle with our old will until we die or until He changes us at the Rapture. For now He helps us fight the battle. I long for the day the battle will be over.
We do not understand these things when we first become saved. A growing Christian will have an increasing awareness of the sinful will of his flesh and the righteous will planted in him by the Lord. He will delight in the will of God and want to be more and more in it.
Romans 7:22: For I delight in the law of God after the inward man: