What are the two books in heaven?

On entering the spirit world, you find the obstructions to memory removed. 

You are sometimes surprised to observe in old people the vivid recollection of the scenes and events of their early childhood, and in many others, there is a tendency, as life advances, to dwell with especial interest on the friends of their youth. 

The reason for this lies in the fact that the body is beginning to loosen its connection with the spirit previous to death.

When the final severance comes, the whole past stands revealed like a panorama and all that was bad is a constant source of self-reproach and consequent unhappiness to the individual whilst that which was good affords him pleasure. 

This evidence of the past, which may be called the Black Book and the White Book that you read of in scripture is thus laid open by death to the eyes of each one immediately on his entrance into the spirit world. Thus, you are unhappy or happy, according as you have done well or ill in your life on earth.

And not only is the past life laid bare to you, but it is patent also to all your friends, for the spirit shows, in your person, the sort of life you have led in the past and you cannot change the appearance of the picture until you have obliterated the recollection of all that was evil by making restitution to those you have wronged and obtaining the forgiveness of those you have injured. 

The picture is changed by such acts of compensation.

When the feelings of others towards one are changed, his own memory of the past becomes dimmed because there is nothing left to remind him of it—eventually, it fades away altogether. He has difficulty in recalling it.