Ambrose of Milan
Catena Aurea · Lukasevangelium 21
And as some spake of the temple, how it was adorned with goodly stones and gifts, he said, As for these things which ye behold, the days will come, in the which there shall not be left one stone upon another, that shall not be thrown down. And they asked him, saying, Master, but when shall these things be? and what sign will there be when these things shall come to pass? And he said, Take heed that ye be not deceived: for many shall come in my name, saying, I am Christ; and the time draweth near: go ye not therefore after them.
It was spoken then of the temple made with hands, that it should be overthrown. For there is nothing made with hands which age does not impair, or violence throw down, or fire burn. Yet there is also another temple, that is, the synagogue, whose ancient building falls to pieces as the Church rises. There is also a temple in every one, which falls when faith is lacking, and above all when any one falsely shields himself under the name of Christ, that so he may rebel against his inward inclinations.