No need to blow anything up. G-d will rebuild the Temple. We will just construct the gates.
Then the word of the Lord came by Haggai the prophet, saying, Is it time for you yourselves to dwell in your paneled houses, and this temple[a] to lie in ruins? Now therefore, thus says the Lord of hosts: Consider your ways! [...] Thus says the Lord of hosts: Consider your ways! Go up to the mountains and bring wood and build the temple, that I may take pleasure in it and be glorified, says the Lord. (Hagai 1:3-5, 7-8)