Like so many common verbs, the meaning of "know" in the Bible is varied and dependent on context. And in some cases -- when it is connected to ideas or objects -- its spiritual meaning and natural meaning are essentially the same. When the Bible talks about people knowing each other and especially when it talks about the Lord knowing people, the meaning has more to do with the states of love within people than it does with any factual knowledge. This makes sense if you think about it. When we really "know" somebody, what we mean is that we know what kind of person they are, what their motivations are, what they love, what they hate, what makes them tick. Those things are far more important than knowing their parents' names, where they were born or what year they graduated from school. Most often then, especially applied to people, "knowing" has to do with the perceptions we have about other people's loves and the conjunction that can exist between those with similar loves, not just a collection of facts.

5071. The reason why the expression 'cursed' is used of those on the left and why their punishment is called 'eternal fire' in the following statements -'Then He will also say to those on the left, Depart from Me, O cursed ones, into eternal fire prepared for the devil and his angels' and 'these will go away into eternal punishment' - is that they have turned away from good and truth and have turned towards evil and falsity. 'Cursing' in the internal sense of the Word means a turning away, 245, 379, 1427, 3570, 3584. The eternal fire into which they were to depart is not material fire, nor is it a tormented conscience, but a craving for evil. For cravings like this in a person are spiritual fires which consume him during the life of the body and torment him in the next life. Because of these fires burning within them, the inhabitants of hell use dreadful methods to torture one another.

[2] Eternal fire is clearly not material fire; and the reason it is not a tormented conscience is that none who are governed by evil have any conscience; and those who have had no conscience during their lifetime cannot have any in the next life. But the reason eternal fire is a craving is that the entire fire of life in a person is fuelled by his loves, a heavenly fire by the love of what is good and true, a hellish fire by the love of what is evil and false. Or what amounts to the same, a heavenly fire is fuelled by love to the Lord and love towards the neighbour, and a hellish fire by self-love and love of the world. Anyone can see, if he stops to think, that all the fire or heat burning within a person is fuelled by his loves. This also explains why love is called spiritual heat and why in the Word fire and heat have no other meaning, 934 (end), 1297, 1527, 1528, 1861, 2446, 4906. The fire of life in the evil is also such that when they feel very strong cravings, a kind of fire is also burning in them, which inflames them with an intense and furious desire to torment others. But the fire of life in the good is such that when a higher level of affection exists with them, a kind of fire is alight in them too. But this fire inflames them with a loving and zealous desire to do good to others.