For the flesh lusts against the Spirit, and the Spirit against the flesh: and these are contrary the one to the other…
A gossamer thread is attached to an arrow, and shot through the air unseen, over an impassable chasm. Fixed on the other side it is sufficient to draw over a cord. The cord draws over a rope, the rope draws over a bridge, by which a highway is opened to all comers. Thus is the gulf passed that lies between the goodly character of a youth fresh from his father's family, and the daring heights of iniquity on which veteran libertines stand. "Out of the heart," said He who knows it, "proceed evil thoughts." Yes, but what come out next? "Murders, adulteries, fornications, thefts, false witness, blasphemies." A horrible gang. How quickly they come on. Once the fountain were cleansed, the streams of life would be pure. So thought David, when, in an agony of grief, he cried, " Create in me a clean heart, O God."
(W. Arnot, D. D.)
Parallel VersesKJV: For the flesh lusteth against the Spirit, and the Spirit against the flesh: and these are contrary the one to the other: so that ye cannot do the things that ye would.