John 2:19-25 New American Standard Bible (NASB)
19 Jesus answered them, “Destroy this [a]temple, and in three days I will raise it up.” 20 The Jews then said, “It took forty-six years to build this [b]temple, and yet You will raise it up in three days?” 21 But He was speaking about the [c]temple of His body. 22 So when He was raised from the dead, His disciples remembered that He said this; and they believed the Scripture and the word which Jesus had spoken.
23 Now when He was in Jerusalem at the Passover, during the feast, many believed in His name as they observed His signs which He was doing. 24 But Jesus, on His part, was not entrusting Himself to them, because He knew all people, 25 and because He did not need anyone to testify about mankind, for He Himself knew what was in mankind.