We take bodiliness and materiality very seriously. The 'stuff' of creation is not evil, but good. Nor is it something to escape from. We are our bodies in the sense that there isn't some real me hidden inside my body. Which is why, of course, we recite belief in the resurrection of the body in the Creed. Salvation in the Christian schema is not 'spiritual', if we mean by that immaterial. God had to become part of creation (and remain God) for creation to be saved. Reflect on that and the world, and our mission within it, becomes more Christlike, more real, and more comprehensive.
There is a tight nexus between creation, Incarnation, sacraments and the resurrection of the body. Start with any one of them and you end up with all the others; unpick any one of them, and the whole lot will, eventually, disappear. There is a consistency here in the way in which God relates to the 'stuff' of creation. Intimately, and without antagonism. Indeed, exactly the opposite to antagonism. While there is no direct proportionality between God and creation, creation is made to find its home in God. If it were not so, and if salvation were just a matter of escape from our materiality, why did God become human? Surely a meditational technique would have sufficed! Or if something a bit more were needed than just a meditational technique, maybe the appearance of an avatar to proclaim some secret knowledge for the initiated and those to be saved. (Sounds like some forms of 'Christianity' doesn't it!) But God becomes human for the salvation of the good creation, and this salvation is the union of creation with God . We call it resurrection, and it is not the destruction of our materiality, but the transformation of our materiality into its final form. Which is why we have sacraments. The Eucharist can truly communicate God. (Remember, the non-competitive God of true transcendence can be 'in' the sacrament without compromising or diminishing the integrity of the 'stuff' of the sacrament.) The final form of bread as a complete and holistic nourishment of the human body and soul is anticipated in the bread of the Eucharist. And it does this precisely as bread.
