When we pray, we are in harmony with God's mercy: mercy towards all those who have asked us to pray for them, for whom we want to pray in harmony with God's heart. This is true prayer. In Church time, Christian intercessory prayer participates in that of Christ: it is the expression of the communion of saints. Catechesis on intercessory prayer, in collaboration with Fr. Mamiarisoa Modeste Randrianifahanana.