Holy Scripture encourages the people of Israel from the beginning to be able to listen to God. Listen, Israel (Deut 6:4). God is the origin of man and he made us in his image, so he made us understand each other, so that we can speak and listen to each other. Listening to each other is an expression of unity and Jesus wants "all to be one...". Catechesis on the exchange of ideas, with Father Rasendramanana Charles Nirina - SDB.