Call Back series vol. 2, Opposition I and II, gives examples from the early days of Christianity and through the succeeding centuries of God's saints who have been willing to suffer greatly to see His kingdom come on earth.

The first volume shows how true Christians have always suffered the antagonisms of the devil and the world when attempting to achieve anything of value for Christ's Kingdom. The reader is guided down the centuries, beginning with Jesus and His disciples in the opening pages and ending in the mid 1600's with the story of George Wishart.

The second volume begins in the mid 1600's with Martin Luther and other reformers. It guides the reader through the next two centuries showing, showing, like its predecessor, how the true Christian has always suffered the antagonisms of the devil and the world when attempting to achieve anything of value for Christ's Kingdom.