You keep them by your own selection do not understand how they came into your minds and what their purpose is.

To forgive is merely to remember only the loving thoughts you gave in the past and those that were given you. All the rest must be forgotten. Forgiveness is a selective remembering, based not on your selection. For the shadow figures you would make immortal are "enemies" of reality. Be willing to forgive the Son […]

You forget in order to remember better

That is why the Holy Spirit is a lesson in remembering. We said before that He teaches remembering and forgetting, but the forgetting aspect is only to make the remembering consistent. You forget in order to remember better.