If you refrain from judging your worst enemy, his children will come to your side. What more severe judgment could come upon an enemy than this?
Throughout history no one has suffered more than God. He has suffered because his own children fell away from him. Ever since the Fall, God has been working tirelessly for the restoration of mankind. People do not know this brokenhearted aspect of God.
Before children, even the most cynical people throw down their usual masks and become capable of feeling the purity and love which all human beings seek.