John 2:18-22

[18] Some Jews said to Jesus, “Show us a miracle as a sign from God. Prove that you have the right to do these things.” 

[19] Jesus answered, “Destroy this temple and I will build it again in three days.” 

[20] They answered, “People worked 46 years to build this Temple! Do you really believe you can build it again in three days?” 

[21] But the temple Jesus meant was his own body. 

[22] After he was raised from death, his followers remembered that he had said this. So they believed the Scriptures, and they believed the words Jesus said.

https://bible.com/bible/406/jhn.2.18-22.ERV