Covenantal theology is a distinctive approach to Catholic biblical theology stemming from the mid-twentieth century recovery of Patristic methods of interpreting scripture by scholars such as Henri de Lubac. This recovery was given further impetus by Dei verbum, the Second Vatican Council's "Dogmatic Constitution on Divine Revelation", and consolidated in the section on scripture Catechism of the Catholic Church (nos. 101–41). These developments gave rise to an approach that emphasizes the "four senses" of scripture within a framework that structures salvation history via the biblical covenants, in combination with the techniques of modern biblical scholarship.