Daniel Sidney Warner and the earlier ministers of the Church of God (Anderson) taught that the restoration of the church was prophesied by the Old Testament prophets, in the New Testament, and in the Book of Revelation. They taught that the time period from 270 to 1530 was the "Papal age" and 1530 to 1880 was the "Protestant age", with 1880 being the year the church of God was restored with the full message of salvation, sanctification, and unity of God's people. Warner describes how he came up with these dates in "Birth of a Reformation". From a number of scriptures in Daniel and Revelation, he took "time, times, and half a time", "42 months" or "1260 days" (Dan 7:25; 12:7, Rev 11:3; 12:6; 12:14; 13:5;) to mean 1260 years of the "Papal age", holding that in symbolic language one day is one year. The 1260 years of the "Papal age" is added to the time that the church lost its unity and purity, which gives the end of the "Papal age" as 1530 AD. Then using the symbol from Revelation of "three days and a half" (Rev 11:11), with each day equaling a century, they held that the duration of the Protestant age was 350 years, which brings them to 1880. This date was the beginning of the full restoration of the church of God and called the "Evening Light age".