He predicted the Temple's destruction and its rebuilding in three days- and the evangelist's comment is that He was talking about His body.
I think that the Church teaches that we are the new Temple, not bricks, but the people of God gathered together.
Yes of course the true Temple is His Body according to our Lord, but you will have a hard time convincing the Jews. They remain obstinate in rejecting the true Temple for the the one made of stone [a counterfeit Isreal with a counterfeit Temple and a counterfeit Christ to preside in it] and which they plan to build for their Moschiach ben David when the political conditions permit.
Again Hyppolytus: ''The Savior raised up and showed his holy flesh like a temple, and he [Antichrist] will raise a temple of stone in Jerusalem." St. Paul in II Thessalonians 2:3-5 'For that day shall not come, except there come a falling away first, and that Man of Sin be revealed, the Son of Perdition; Who opposeth and exalteth himself above all that is called God, or that is worshipped; so that he as God sitteth in the temple of God, shewing himself that he is God.'
And also the venerable St. Irenaeus on the holy Apostle Paul's warning: 'Moreover [Paul] has also pointed out this which I have shown in many ways: that the temple in Jerusalem was made by the direction of the true God. For the apostle himself, speaking in his own person, distinctly called it the temple of God [2 Thess. 2:4] . . . in which the enemy shall sit, endeavoring to show himself as Christ. The adversary will sit in the temple of Jerusalem, in order to show himself as Christ, he will demand that those who are captivated by him should worship him as Christ. The Antichrist will demand worship as if he were God.'
(Against Heresies 5:25:1-2 ).
The holy Fathers and the holy Scriptures are proven true and reliable as we witness the progression of this fateful prophecy in history.