51. As regards what the image is, an image is not a likeness but is 'according to a likeness'. Therefore it is said, 'Let Us make man in Our image, according to Our likeness'. A spiritual man is an image, whereas a celestial man is a likeness or exact replica. The spiritual man is the subject in this present chapter, the celestial man in the next. The spiritual man, who is an image, is called by the Lord 'a son of light', as in John,

He who walks in the darkness does not know where he is going. While you have the light, believe in the light, that you may be sons of light. John 12:35-36.

He is also called 'a friend',

You are My friends if you do whatever I command you. John 15:14-15

The celestial man however, who is a likeness, is called 'a son of God', in John,

As many as received Him, to them He gave power to be sons of God, to those believing in His Name, who were born, not of blood, ¹ nor of the will of the flesh, nor of the will of man, but of God. John 1:12-13.

Footnotes:

The sun in the Bible represents the Lord, with its heat representing His love and its light representing His wisdom. “Daytime,” then, represents a state in which we are turned toward the Lord, receiving His love and being enlightened by His truth. And “nighttime,” obviously, represents states in which we are turned away from the Lord, left cold and blind to the truth. The most common word used for it in the New Christian theology is “obscurity.” The darkness is not absolute, of course. The light of the moon represents the understanding we can have based on facts and our own intelligence. But while the moon reflects some of the sun's light, it offers almost no heat, so this kind of understanding is a cold one, without the warmth of love. And at its darkest and coldest, night represents a state of judgment. This happens when a person -- or a church -- becomes so mired in evil and falsity that there is no light or heat. The Lord can then step in, separate the good from the evil, consign the evil to hell and begin rebuilding based on the remnant that is still good. Drastic as that sounds, it is something that we all go through repeatedly in various aspects of our loves, so that we can be rid of what is evil and let the Lord rebuild us as angels.