The "abomination of desolation" is a phrase from the Book of Daniel and mentioned by Jesus in the Gospels, referring to a future event where a blasphemous display will take place in the temple, likely indicating the beginning of a period of great tribulation. This event is seen as a sign of the end times and the coming of Jesus Christ.
I will make those who are of the synagogue of Satan, who claim to be Jews though they are not, but are liars—I will make them come and fall down at your feet and acknowledge that I have loved you. Revelation 3:9
