Of course I don’t know if what I believe is true as the same with yourself.
Can you remember your first step? Or your first word? Or the first time you used your eyes or brain?
Our bodies have all grown and developed. We don’t need to remember every step, but the goal of the body is to develop and grow. That emotion and caring and love you feel inside. That has hopefully developed through every incarnation. That is the progress of our soul.
The goal is development of our soul throughout every incarnation and every test we have been through. Sometimes the incarnation may have been successful and our soul has developed emotionally. Other times our soul has failed to some regard and we need another chance to Learn that lesson again. Perhaps from a different perspective or lifeform.
If we remembered what happens when we die. If we remembered the purpose of re-birth it would be like sitting a test with the answers in front of you. No use in taking the test. You may as well have not shown up to take the exam. You may as well not been re-born.
