Let us hear the conclusion of the whole matter: Fear God, and keep his commandments: for this is the whole duty of man. Ecclesiastes 12:13.
In the day when everyone shall be rewarded according as his work has been, how will transgressors appear in their own sight as for a few moments they are permitted to see the record of their life as they have chosen to make it, regardless of the law which through the eternal ages will govern the universe? They will then see what God desired them to do. They will realize that they should have used their blood-bought privileges in behalf of truth and righteousness. They will see that instead of placing their talents and influence on the side of rebellion, thus strengthening the forces of the enemy, they should have devoted their powers to being and doing good...
In the day of judgment men will see what they might have become through the power of Christ. They will see the robbery that they have practiced toward God. They will realize that they have apostatized from their Creator. They will see the good they might have done but did not do. They utterly refused to be made better. The efforts put forth in their behalf were in vain. They knew the claims of God, but they refused to comply with the conditions laid down in His Word. By their own choice they were united with demons. The power given them to use in God’s service they used in the service of self. They made self their god, refusing to submit to any other control. They deceived themselves, and made themselves contemptible in the sight of God...
In the day of judgment all this opens up before the impenitent. Scene after scene passes before them. As plainly as in the light of the noonday sun, they all see what they might have been had they cooperated with God instead of opposing Him. The picture cannot be changed. Their cases are forever decided. They must perish with the one whose ways and works they followed.
A flash of light will come to all lost souls. They will see clearly the mystery of godliness, which during their lifetime they despised and hated. And the fallen angels, endowed with higher intelligence than man, will realize what they have done in using their powers to lead human beings to choose deception and falsehood. All who have united with the deceiver, all who have learned his ways and practiced his deceptions, must perish with him... The Lord Jesus looks pityingly upon them and says, “Depart.” At that time Zechariah, chapters 3 and 4, will be understood.—Manuscript 37, July 8, 1900, “The Revelations of the Judgment.”
Reference: E.G. White, "The Upward Look," p. 203.