But He was speaking of the temple of His body.
John 2:21
Surrounding context
2:20 Then the Jews said, "It has taken forty-six years to build this temple, and will You raise it up in three days?"
2:21 But He was speaking of the temple of His body.
2:22 Therefore, when He had risen from the dead, His disciples remembered that He had said this to them; and they believed the Scripture and the word which Jesus had said.