5 Then, as some spoke of the temple, how it was [a]adorned with beautiful stones and donations, He said, 6 “These things which you see—the days will come in which not one stone shall be left upon another that shall not be thrown down.”
Luke 21:5-6
Jesus predicts the destruction of the temple. As Christ came to Earth to fulfill the law and tear down the walls between God and man, so would the temple be taken down and destroyed. In 70AD, within a time of rebellion of the Jewish people, the Romans plundered and destroyed the temple, decades after Jesus was crucified.
He sought a one on one relationship between God and man for which no temple was required to maintain. The old ways crumbled. All of the worldly wealth and treasures would be lost to Rome and time while only God, who all should focus on, would remain.