Now we must know, that howsoever Mortification is a deadly woundgiven unto sin, whereby it is disabled to bear any rule or commanding power in the heart of a regenerate man, yet we say, Mortification is not perfect; that is, it doth not so slay sin, that we have no sin at all in us, or that we cease to sin; for in the most regenerate and holiest man that lives, there is still the sap of sin in his heart: A tree may have withered branches by reason of some deadly wound given unto the root, and yet there may remainsome sap in the root which will in time bring forth other branches: