I wasn't sure at first, but I think I agree with Laidbackdude.
I think "Blood" is referring to the actions of the flesh in this song, and "wine" being the blood of Christ and how it will be hard to overcome the temptations, even with Christ, now that you have tasted blood.
If you are born again, you can probably relate. Christ does give you clean slate, but your mind doesn't forget all that you have done or all that you have "tasted."
I wasn't sure at first, but I think I agree with Laidbackdude.
I think "Blood" is referring to the actions of the flesh in this song, and "wine" being the blood of Christ and how it will be hard to overcome the temptations, even with Christ, now that you have tasted blood.
If you are born again, you can probably relate. Christ does give you clean slate, but your mind doesn't forget all that you have done or all that you have "tasted."