What did existentialist Gabriel Marcel believe about the ontological proof of God as per Rene DesCarte?

Gabriel Marcel critiqued René Descartes' ontological proof of God, emphasizing the existential and personal aspects of faith over abstract reasoning. He believed that true understanding of existence and God cannot be achieved solely through rational arguments, as they neglect the lived experience and the relational dimension of human existence. For Marcel, the encounter with God is more of an existential commitment than a logical deduction, highlighting the importance of personal experience and choice in matters of faith.