What is the relationship between the flesh of Jesus and the "flesh" of creation? What is the salvific meaning of the incarnation of the Word for every creature, human and non-human? These are the questions that punctuate the work of the theology of deep incarnation, an unprecedented eco-theological current that roots the value of every creature in the mystery of the incarnation, as the assumption by the divine Logos of the flesh of creation in Jesus. After recalling its origins and purposes, the research focuses, in the first part, on three decisive aspects: the biblical foundation (in particular Jn 1:14), the reference to historical-patristic testimony, and the rethinking of transcendence and immanence. In the second part, however, the author compares the profound incarnation with the theology of Paolo Gamberini and attempts to offer a personal reworking of it, outlining a theology of the "world of the incarnate Son." This is an original and in-depth study, presenting the Italian theological landscape with a new voice capable of bringing the heart of the Christian faith into dialogue with the questions of our age.