5. He promises that there shall be a wonderful reformation wrought in those that are gathered to the church: They shall not walk any more after the imagination of their evil hearts. They shall not live as they list, but live by rules, not do according to their own corrupt appetites, but according to the will of God. See what leads in sin—the imagination of our own evil hearts; and what sin is—it is walking after that imagination, being governed by fancy and humour; and what converting grace does—it takes us off from walking after our own inventions and brings us to be governed by religion and right reason.