"The devil had as good have let Paul alone, for he no sooner comes into prison but he falls a preaching, at which the gates of Satan's prison fly open, and poor sinners come forth"

This quote by William Gurnall is referring to the Apostle Paul and his capability to preach the gospel of Jesus Christ. Paul was sent to prison multiple times for his faith, yet he still discovered methods to preach the gospel. Gurnall is recommending that the devil had no possibility of stopping Paul from preaching, as the power of the gospel was so strong that it might even break through evictions of Satan's prison. The quote indicates that Paul's preaching was so powerful that it had the ability to release those who were held captive by the devil. This quote is a testimony to the power of the gospel and how it can break through even the strongest of barriers. It is a suggestion that no matter how hard the devil tries to keep us from the reality, the power of the gospel will constantly dominate.