And this is the number of them
Of the vessels delivered, as follows:
thirty chargers of gold, a thousand chargers of silver;
these, according to Ben Melech, were vessels in which water was put to wash hands in; but rather they were, as Aben Ezra observes from the Jerusalem Talmud F18, vessels in which they gathered the blood of lambs and bullocks slain for sacrifices:
nine and twenty knives;
which, because the handles of them were of gold or silver, were valuable, and might be very large knives, and what the priests used in slaying and cutting up the sacrifices.
F18 T. Hieros. Yoma, fol. 41. 1.