Continued from here….
Grace, on the one hand, is unapproachable and invisible to those who are still possessed by unbelief and the passions, and is seen, on the other hand, and revealed to those who with faith and in fear and trembling do the commandments and give evidence of a worthy repentance.
This same grace of itself incontestably brings the future judgment to pass in them.
Rather, indeed, it becomes itself the day of divine judgment by which he who is purified is continually illumined, sees himself as he is in truth and in every detail, and all his works for what they are, whether done by the body or acted on by the soul.
Nor this alone, but he is as well judged and examined by the divine fire, and, thus enriched by the water of his tears, his whole body is moistened and he is baptized entire, little by little, by the divine fire and Spirit, and becomes wholly purified, altogether immaculate, a son of the light and of the day, and from that point on no longer a child of mortal man.
It is quite for this reason, too, that such a man is not judged at the judgment and justice to come, for he has already been judged. Neither is he reproved by that light, for he has been illumined beforehand.
Nor is he put to the test and burned on entering this fire, for he has been tried already. Neither does he understand the Day of the Lord as appearing sometime “then,” because, by virtue of his converse and union with God, he has become wholly a bright and shining day.
[…] As many therefore as are children of the light also become sons of the Day which is to come, and are enabled to walk decently as in the day, The Day of the Lord will never come upend them, because they are already in it forever and continually.
The Day of the Lord, in effect, is not going to be revealed suddenly to those who are ever illumined by the divine light, but for those who are in the darkness of the passions and spend their lives in the world hungering for the things of the world, for them it will be fearful and they will experience it as unbearable fire.
However, this fire which is God will not appear in an entirely spiritual manner but, one might say, as bodilessly embodied, in the same way as, according to the Evangelist, Christ of old was seen by the Apostles after having risen from the dead.
Symeon the New Theologian (949–1022 AD): Tenth Ethical Discourse @ Eclectic Orthodoxy.