THERE IS NO EFFECT WITHOUT A CAUSE
“Since God can neither punish us for the good we have done nor for the evil we have not done, then if we are being punished it is because we have done evil. If we have not done evil in this life, then we did it in another. This is an alternative that is impossible to escape and whose logic shows on what side the justice of God lies.
Therefore, humans are not always or fully punished in their current existence, but they can never escape the consequences of their wrongs. The prosperity of evil persons is only momentary and if they do not expiate their evil today, they will tomorrow; likewise, those who suffer today are expiating their past. The misfortune that at first seems to be undeserved thus has its reason for being, and those who are suffering may always say, 'Forgive me, Lord, for I have sinned.'"
“The Gospel According to Spiritism” by Allan Kardec
Chapter 5 in "The Gospel According to Spiritism" by Allan Kardec: https://www.ediceiofamerica.com/allan-kardec/329-the-gospel-according-to-spiriti sm.html
Episode about REINCARNATION: https://www.youtube.com/watch?v=r_Low5E0QnA&t