Obedience to the law of God is sanctification. There are many who have erroneous ideas in regard to this work in the soul, but Jesus prayed that His disciples might be sanctified through the truth, and added, “Thy word is truth” (John 17:17). Sanctification is not an instantaneous but a progressive work, as obedience is continuous. Just as long as Satan urges his temptations upon us, the battle for self-conquest will have to be fought over and over again; but by obedience, the truth will sanctify the soul. Those who are loyal to the truth will, through the merits of Christ, overcome all weakness of character that has led them to be molded by every varying circumstance of life. (FW 85.2) MC VC