Paul declares that 'flesh and blood cannot inherit God's kingdom.' He doesn't mean that physicality will be abolished. 'Flesh and blood' is a technical term for that which is corruptible, transient, heading for death. The contrast is not between what we call physical and what we call nonphysical but between corruptible physicality, on the one hand, and incorruptible physicality, on the other.
- NT Wright
Therefore, to obtain blessedness, we need not quit every kind of body, but only the corruptible, cumbersome, painful, dying,—not such bodies as the goodness of God contrived for the first man, but such only as man's sin entailed.