The Duty And Liberty Of A Christian Church: Asserted Against Popery, Puseyism, And Erastianism is a book written by Andrew Gray in 1843. The book focuses on the role and responsibility of a Christian church and how it should operate in the face of challenges posed by Popery, Puseyism, and Erastianism. Gray argues that the church has a duty to uphold its principles and beliefs, and that it should not be swayed by external pressures or influences. He...