In Brief CCC 593

Jesus venerated the Temple by going up to it for the Jewish feasts of pilgrimage, and with a jealous love he loved this dwelling of God among men. the Temple prefigures his own mystery. When he announces its destruction, it is as a manifestation of his own execution and of the entry into a new age in the history of salvation, when his Body would be the definitive Temple.

Read the full chapter 2. I Believe in Jesus Christ, the Only Son of God ¶422–682