The temple must be rebuilt and the sacrifices reestablished on the Temple Mount before the return of Jesus the Messiah. The Temple in Israel plays a key role in Israel’s history and Daniel's 70th Week. In the history of Israel there have been two temples; First, the temple of Solomon was completed in 959 B.C. and destroyed in 586 B.C. by the Babylonians led by Nebuchadnezzar. (See 1 Chronicles 28, 2 Chronicles 3 and Daniel 1:1-2.) The second temple was built after the nation returned to Jerusalem around 520 B.C. This is the temple Christ came to, and is called Herod’s temple in the N.T. It was destroyed in 70 A.D. by General Titus and the Roman Legion. In Revelation 11 John is told to measure a future third temple. It will be rebuilt prior to the End Times, and it will be there that Antichrist will declare himself to be God at the mid-point of Daniel's 70th Week. See 2 Thessalonians 2:3-4. This Abomination of Desolation will trigger the Great Tribulation. See Daniel 9:27, Matthew 24:15. During this time, Antichrist will set up the seat of his empire in Jerusalem, and he and his followers will desecrate the rebuilt temple through the worship of Antichrist and an image of the beast.
Revelation 11:1-2 1 I (John) was given a reed like a measuring rod and was told, (by the mighty angel from Revelation Chapter 10) Go and measure (John’s act of measuring signifies God’s ownership as he surveys the temple area - but only the temple proper) the temple of God ( Greek = hieron, the complete temple building) and the altar, (Gk = naos, the holy of holies, where the ark of the covenant resides) and count the worshipers there. (The temple in Jerusalem will be rebuilt during the End Times. See Mt 24:15, Dan 9:27, 11:31. Here, the mighty angel from Ch. 10 is instructing John to literally measure the dimensions of the rebuilt temple. One measures when they are ready to build something.) 2 But exclude the outer court; do not measure it, because it has been given to the Gentiles. (The "outer court" is the court of the Gentiles and is probably a reference to the Dome of the Rock and the Al Aqsa mosques, which are holy sites for Muslims. Note that it is the proximity of Islamic holy sites to the temple grounds that has for so long kept the temple from being rebuilt) They (the Gentiles, and more specifically, the followers of Antichrist) will trample on the holy city (of Jerusalem) for 42 months. During the second half of Daniel's 70th Week, which lasts 3 1/2 years, or 42 months, the followers of Antichrist will abuse and dishonor the holy city of Jerusalem by allowing worship of false gods upon the very holy site God calls His house. Specifically, once the Abomination of Desolation occurs, the rebuilt temple will become a site of idol worship for Gentiles. In Daniel 8, the prophet Daniel set forth a dual prophecy of desolation in the temple. The first prophecy was fulfilled by a Gentile ruler named Antiochus Epiphanies, a cruel Syrian king who in 168 B.C. plundered Jerusalem and murdered hundreds of Jews. Antiochus Epiphanies desecrated the temple by offering a pig – a dirty animal - upon the altar. Antiochus Epiphanies also had an image of himself placed in the holy of holies. Daniel's prophecy also describes the desolation that will occur during Daniel's 70th Week. See Daniel 8:9-12)