John 2:18-22 Then answered the Jews and said unto him, What sign shew thou unto us, seeing that thou do these things? Jesus answered and said unto them, Destroy this temple, and in three days I will raise it up. Then said the Jews, Forty and six years was this temple in building, and wilt thou rear it up in three days? But he spoke of the temple of his body. When therefore he was risen from the dead, his disciples remembered that he had said this unto them; and they believed the scripture, and the word which Jesus had said.
The Jews were as always acting as an evil and adulterous generation that seek after a sign (see Matt. 12:39; 16:4) and Jesus gave them the same answer He would do later: that of His death and resurrection (the sign of the prophet Jonas). The one sign that will hopefully be the answer to all their doubts and unbelief so that they will accept Him as their Saviour.
Here He gave the same answer in the form of the destruction of that temple (Herod’s) that He will raise up in three days. This is the third New Testament prophecy in John where He no doubt pointed to His body – this temple.
With Christ’s death, the New Testament period started (Matt. 26:28; 1Cor. 11:25; Heb. 9:15) and temple service was abolished. God now (during the New Testament period) works through individuals and He clearly states in 1Corinthians 6:19 that our bodies are the temple of the Holy Ghost and He warns us through the Apostle John in Revelation 2:9; 3:9 that there will be those that blaspheme because they say they are Jews, and are not, but are the synagogue of satan. Service to God now comes through the body of Christ (1Cor. 12:27; Ep. 4:12), thus each individual that is consecrated to Him for His glory and honour (1Pet. 2:21-22) and not through a temple or synagogue (Acts 7:48; 17:24).
The rebuilding of the temple was commenced by Herod the Great, 20 B.C. Herod tore down Zerubbabel’s temple to make it larger and better.
When Jesus has risen from the dead (Matt. 27:51-53; 28:6; 1Cor. 15:12-23), His disciples remembered His words and they believed the Scripture – that was given to Christ of the Father (John 14:10).