The human being is led to a specific set of parents, but not only because he himself is attracted to those people. High exalted beings are also involved and working on this, because at the current stage of development they have taken this task upon themselves to order karmic relationships in a way as to be true and just. So, if occasionally the parents apparently appear not to belong with the children, or it seems to be so for the children, we need not look for an error or injustice behind this seeming contradiction. For in this might often be found the good, in that a human being might have to find his way under the most complicated circumstances and among the strangest relationships, to learn from this.
Source (German): Rudolf Steiner – GA 108 – Die Beantwortung von Welt- und Lebensfragen durch Anthroposophie – Breslau (Wroclaw), December 2, 1908 (page 61)
Translated by Nesta Carsten-Krüger