The Old Testament is divided into 4 parts: the Pentateuch, the Historical Books, the Hagiographer-Wisdoms and the Prophets; the Psalms therefore belong to the third part, i.e. in the Books containing the Hagiographer-Wisdoms. The Psalms are one of the Books of Wisdom and are intended to impart skills and experiences. God is the author of the Bible, but humans work with him. Catechesis on praying with the Psalms, in collaboration with Fr Flavien Andriamirijanirina.