Sentence:  Let not lazy Christians ever think they shall be more than conquerors, while they use only drowsy and yawning desires, and wish that such a lust were weakened, that such a <WSD>corruption</WSD> were mortified and subdued, but never rouse up their graces against them. 
Meaning of the word marked with <WSD> tags:  (en) Something originally good or pure that has turned evil or impure; a perversion.