Funny thing is - we're dependant on our flesh to survive,  but why? 

Because in the Garden we chose it - (lust of the flesh, lust of the eyes, and pride (of life in our flesh)) over God's will; so, because he gives us the desires of our hearts, he gave us over to our fleshly appetites, making our mortal flesh our source of life. So now, the only way to survive the death to our flesh those appetites produce is to give our flesh back to him to enjoy and dwell in and develop an appetite for him, for his flesh, not our own, for his flesh is righteous,  clean, holy - no lust is found in it, nor in his eyes, neither is pride found therein. So, we need to depend on, to survive on, to thrive on, his flesh, by consuming it, not our own. This means, we quit catering to our own flesh and instead we give to others to consume, to survive on, as he did with his flesh (take, eat, this is my body, broken for you). We actually become "living sacrafices" - giving our lives, our very flesh, in service to him, who then takes our lives and gives them to others. We cannot partake of another's flesh (in the Body) if we are selfishly clinging to our own.  Selah.