John 2:18-22 Amplified Bible, Classic Edition (AMPC)
18 Then the Jews retorted, What sign can [a]You show us, seeing You do these things? [What sign, miracle, token, indication can You give us as evidence that You have authority and are commissioned to act in this way?]
19 Jesus answered them, Destroy (undo) this temple, and in three days I will raise it up again.
20 Then the Jews replied, It took forty-six years to build this temple (sanctuary), and will You raise it up in three days?
21 But He had spoken of the temple which was His body.
22 When therefore He had risen from the dead, His disciples remembered that He said this. And so they believed and trusted and relied on the Scripture and the word (message) Jesus had spoken.
John 2:18-22 New International Version (NIV)
18 The Jews then responded to him, “What sign can you show us to prove your authority to do all this?”
19 Jesus answered them, “Destroy this temple, and I will raise it again in three days.”
20 They replied, “It has taken forty-six years to build this temple, and you are going to raise it in three days?” 21 But the temple he had spoken of was his body. 22 After he was raised from the dead, his disciples recalled what he had said. Then they believed the scripture and the words that Jesus had spoken.