The fraud and manipulation, which abounds in the church under the pretense that it is the work of the Holy Spirit, make this book required reading. Things excellent in themselves and acknowledged by all Christians are often counterfeited; the more worthy any thing is, the more destructive is the abuse of it.

All believers must “try the spirits” because false prophets and false teachers deprive us of liberty. Some people claim to know the Spirit’s inward enlightenment, but the darkness of Satan fills their imaginations. This false light is of no use to the souls of men; it is in opposition to Christ and his work. The only way to tackle this is by giving a plain and scriptural account of the nature and work of the Holy Spirit.