Mark is the father of two children abducted by their mother to join ISIS in Syria. In this open letter, he reflects on how religion has become distorted and used for power and control. He discusses his own doubts about religion from a young age and his rejection of converting to Islam from his partner. He expresses fears that ISIS will indoctrinate his children with their extreme religious views and force them to conform. While he respects individual freedom to practice religion, he is critical of the lack of self-criticism in the Muslim world regarding radicalism and the abuse of religion. Overall, he advocates for mutual understanding and respect between all people as the true essence of God.