[2] From the Old Kingdom onward, stone was generally reserved for tombs and temples, while bricks were used even for royal palaces, fortresses, the walls of temple precincts and towns, and for subsidiary buildings in temple complexes. (en.wikipedia.org)
Indeed, in the Gospel, Jesus justifies his driving out the moneychangers from the temple precincts, by invoking the prophecy of Isaiah: «Zeal for my Father's house consumes me.» (firstthings.com)