"Turn your eyes upon Jesus; Look full in His wonderful face; And the things of earth will grow strangely dim, in the light of His glory and grace."
The "flesh" is the sinful self. It is the sin principle within. Paul said, "For I know that in me (that is, in my flesh), dwelleth no good thing..." (Romans 7:18). ME=MY FLESH
"THE FAITH = "the faith which was once for all delivered to the saints" (Jude 3). We must study to show ourselves approved and learned in our doctrines, let alone the Holy Scriptures, to be able to ward off the attacks of the Devil and all antagonists.