War Within

"If sin be subtle, watchful, strong and always at work in the business of killing our souls, and we be slothful, negligent, foolish, in proceeding to the ruin thereof, can we expect a comfortable event? There is not a day but sin foils or is foiled."

As Owen says above, we need to be vigilant with waring against sin in our lives. If were passive we can be assured sin is not. So we must fight, but we are not alone. If we have come into the family of God, we have the Holy Spirit in us helping us and empowering us to ward of the sins which so easily beset us.