Seems a reference to the Living Sacrifice, if mankind is to share heaven with God they will have to learn to feed off Him spiritually in a very physical way.

Source to Source energy, SELF to Self, the Spirit that dwells within His Eternal Flesh feeding the Spirit in your Eternal Flesh for all of Eternity.

These are why the Interdimensional Seals are so important to the One's Eternal Flesh.

So he can go thru dimensions and not get stuck in all of them in the Macrocasim, this is why Incarnations were chosen in the microcasim.