GC 620
(The Great Controversy 620)
Had not Jacob previously repented of his sin in obtaining the birthright by fraud, God would not have heard his prayer and mercifully preserved his life. So, in the time of trouble, if the people of God had unconfessed sins to appear before them while tortured with fear and anguish, they would be overwhelmed; despair would cut off their faith, and they could not have confidence to plead with God for deliverance. But while they have a deep sense of their unworthiness, they have no concealed wrongs to reveal. Their sins have gone beforehand to judgment and have been blotted out, and they cannot bring them to remembrance. (GC 620.1) MC VC
Satan leads many to believe that God will overlook their unfaithfulness in the minor affairs of life; but the Lord shows in His dealings with Jacob that He will in no wise sanction or tolerate evil. All who endeavor to excuse or conceal their sins, and permit them to remain upon the books of heaven, unconfessed and unforgiven, will be overcome by Satan. The more exalted their profession and the more honorable the position which they hold, the more grievous is their course in the sight of God and the more sure the triumph of their great adversary. Those who delay a preparation for the day of God cannot obtain it in the time of trouble or at any subsequent time. The case of all such is hopeless. (GC 620.2) MC VC
Those professed Christians who come up to that last fearful conflict unprepared will, in their despair, confess their sins in words of burning anguish, while the wicked exult over their distress. These confessions are of the same character as was that of Esau or of Judas. Those who make them, lament the result of transgression, but not its guilt. They feel no true contrition, no abhorrence of evil. They acknowledge their sin, through fear of punishment; but, like Pharaoh of old, they would return to their defiance of Heaven should the judgments be removed. (GC 620.3) MC VC