Father Devémy saw the ceramic Traversée de la mer Rouge intended for the church of Assy, he gives his opinion. He responds to Chagall's letter, dated October 1st, 1956, who decides that he can, as the son of Jews, offer this work to a church in the name of tolerance. He gives his reasons to explain the importance of this work, evokes the links between Judaism and Christianity, as well as his conception of art.