I beseech you therefore, brethren, by the mercies of God, that you present your bodies a living sacrifice, holy, acceptable to God, which is your reasonable service. And do not be conformed to this world, but be transformed by the renewing of your mind, that you may prove what is that good and acceptable and perfect will of God.--Romans 12:1-2
The claim to be without sin is, in itself, evidence that he who makes this claim is far from holy. It is because he has no true conception of the infinite purity and holiness of God, or of what they must become who shall be in harmony with His character; because he has no true conception of the purity and exalted loveliness of Jesus, and the malignity and evil of sin, that man can regard himself as holy. The greater the distance between himself and Christ, and the more inadequate his conception of the divine character and requirements, the more righteous he appears in his own eyes.
The sanctification set forth in the Scriptures embraces the entire being--spirit, soul, and body. Paul prayed for the Thessalonians, that their "whole spirit and soul and body be preserved blameless unto the coming of our Lord Jesus Christ." [1 Thessalonians 5:23.]...Christians are bidden to present their bodies, "a living sacrifice, holy, acceptable unto Good." In order to do this, all their powers must be preserved in the best possible condition.
Every practice that weakens physical or mental strength unfits man for the service of his Creator. And will God be pleased with anything less than the best we can offer? Said Christ, "Thou shall love the Lord thy God with all thy heart." Those who do love God with all the heart, will desire to give Him the best service of their life, and they will be constantly seeking to bring every power of their being into harmony with the laws that will promote their ability to do His will. (The Great Controversy, 473)
REFLECTION: God will not be pleased with anything less than the best we can offer. Those who love Him with all the heart, will desire to give Him the best service of the life, and they will be constantly seeking to bring every power of their being into harmony with the laws that will promote their ability to do His will. (Patriarchs and Prophets, 352-353)