Faith and Blood 101:4

4: Blood has immunological functions, including the circulation of white blood cells and the detection of foreign materials created by antibodies.

Faith, through obedience, puts in a man the Spirit of God. The power in this Spirit delivers gifts that begin to immunize a man against the sicknesses of the world.

1 Corinthians 12:1-13
1. Now about spiritual gifts, brothers, I do not want you to be ignorant.
2. You know that when you were pagans, somehow or other you were influenced and led astray to mute idols.
3. Therefore I tell you that no one who is speaking by the Spirit of God says, "Jesus be cursed," and no one can say, "Jesus is Lord," except by the Holy Spirit.
4. There are different kinds of gifts, but the same Spirit.
5. There are different kinds of service, but the same Lord.
6. There are different kinds of working, but the same God works all of them in all men.
7. Now to each one the manifestation of the Spirit is given for the common good.
8. To one there is given through the Spirit the message of wisdom, to another the message of knowledge by means of the same Spirit,
9. to another faith by the same Spirit, to another gifts of healing by that one Spirit,
10. to another miraculous powers, to another prophecy, to another distinguishing between spirits, to another speaking in different kinds of tongues, and to still another the interpretation of tongues.
11. All these are the work of one and the same Spirit, and he gives them to each one, just as he determines.
12. The body is a unit, though it is made up of many parts; and though all its parts are many, they form one body. So it is with Christ.
13. For we were all baptized by one Spirit into one body-whether Jews or Greeks, slave or free-and we were all given the one Spirit to drink.

Paul gives us a list, in the book of Philippians, that encourages us to apply our faith, through obedience. It is a terrific example of our first four lists combined. It breathes into our spirit, it feeds our spirit, it removes the toxic things in our life simply by replacing them with life and it begins to build up your spirit man immunizing him against the ways of the world.

Philippians 4:8
Finally, brethren, whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good report; if there be any virtue, and if there be any praise, think on these things.