Adam Clarke’s Commentary on the Bible re Daniel 7:25:
Until a time and times and the dividing of time – In prophetic language a time signifies a year; and a prophetic year has a year for each day. Three years and a half (a day standing for a year, as in John 9:24) will amount to one thousand two hundred and sixty years, if we reckon thirty days to each month, as the Jews do.
If we knew precisely when the papal power began to exert itself in the antichristian way, then we could at once fix the time of its destruction. The end is probably not very distant; it has already been grievously shaken by the French. In 1798 the French republican army under General Berthier took possession of the city of Rome, and entirely superseded the whole papal power. This was a deadly wound, though at present it appears to be healed; but it is but skinned over, and a dreadful cicatrice remains. The Jesuits, not Jesus, are now the Church’s doctors.
If the papal power, as a horn or temporal power, be intended here, which is most likely, (and we know that that power was given in 755 to Pope Stephen II. by Pepin, king of France), counting one thousand two hundred and sixty years from that, we are brought to a.d. 2015, about one hundred and ninety years from the present [a.d. 1825]. But I neither lay stress upon nor draw conclusions from these dates. If the Church of Rome will reform itself, it will then be the true Christian Church, and will never be destroyed. Let it throw aside all that is ritually Jewish, all that is heathen; all that which pretends to be of God, and which is only of man, all doctrines that are not in the Bible; and all rites and ceremonies which are not of the appointment of Christ and his apostles; and then, all hail the once Roman, but now, after such a change, the Holy, Catholic Church! Every true Protestant would wish rather the reform than the extinction of this Church.