Romans 6 explains the two natures of the believer.
The choice to yield to the Holy Spirit or not (Ro.6:16)
Romans 7 explains the battle that goes on between the two natures.
Romans 7 is a saved man dealing with sin in his life.
So, verse 14 describes a saved man? One who is carnal, fleshly, enslaved to Sin as a master?
I don't think so.
ALIVE OR DEAD? (click here to read the explanation)
You can begin to get the idea of the above, that the state of the man of Romans 7:14 is outside the circle of Grace, but you should read through the complete description of this chat by clicking on the legend above. That will take you to the Happy Heralds site, with lots of information on this chapter which is troublesome to those whose evangelism style is based on "easy believism" rather than on discipleship.