Our souls can feel all kinds of pain in the context of our life experiences.
But the soul suffers additional pains that are not intrinsically linked to our life processes and experiences.
An individual soul can also suffer the pain of the past.
This includes the past within a single lifetime, as well as past incarnations.
When the past is known to us, it is possible to see a coherent sequence that unites the events of our lives.
About our previous incarnations, however, we seldom remember anything.
Yet this past is still attached to our individual souls.
–Rabbi Adin Steinsaltz