The abomination of desolation was 1260 years (a year is as a day with the Lord) of Papal Rome rule from 538AD with Emperor Justinian’s decree and under the military protection of Belisarius and the beast (Papal Rome) until the deadly wound came in 1798 by General Berthier who made his entrance into Rome and abolished the papal government and established a secular one. This is also confirmed in Revelation 12:6 the church of Jesus would hide in the wilderness for exactly 1260 days (years) or 3 ½ years. This was the time when Rome persecuted the Christians and killed them which were approximately 500 million saints slain for the cause of their faith in Jesus. 1798 – 538 = 1260 days/years. Napoleon had closed down the Catholic Church and the Papacy and its power was thought to be forever broken. The wound was largely healed in 1929 when Mussolini gave the Vatican back to Papal Rome and established it as a country in it's own right in the Lateran Treaty. Today the Vatican has formal diplomatic relations with almost every country in the world.
(Rev 13:3, 12; Matthew 24:15; Rev 12:6)
Jesus said those who will endure in the faith of Christ unto the end the same shall be saved. This means the end of Papal rule in 1798 which now allowed the Gospel to be preached through out the world as we have been set free from Papal authority even though Papal Rome will try to take its seat again to rule the nations from Jerusalem, which is also an abomination of desolation to God as Satan said “I will ascend into heaven; I will exalt my throne above the stars of God (other ruling powers) I will sit also upon the Mount of the Congregation in the sides of the north (Jerusalem). I will ascend above the clouds, I will be like the Most High,”. There is much tribulation yet to come through Papal Rome as the world will face their tyranny once again and then the end shall come when God will judge the world as he separates the wheat from the tares, or the goats from the sheep and make end to all sin.
(Matthew 24:13, 14; Daniel 11:36-40; 11:41-45; 2Thessalonians 2:3, 4; Isaiah 14:12-14)