{What sign shewest thou unto us?} (Ti s(886d)eion deiknueis
h(886d)in;). They may have heard of the "sign" at Cana or not, but
they have rallied a bit on the outside of the temple area and
demand proof for his Messianic assumption of authority over the
temple worship. These traders had paid the Sadducees and
Pharisees in the Sanhedrin for the concession as traffickers
which they enjoyed. They were within their technical rights in
this question.