en_tn_condensed/num/03/47.md

You must use the shekel of the sanctuary as your standard weight

This means that the shekel must weight the same as those in the sanctuary. Alternate translation: "You must use the weight of the shekels in the sanctuary as your stand weight" (See: rc://en/ta/man/jit/figs-explicit)

twenty gerahs

"20 gerahs." A gerah is a unit of weight equal to about .57 kilograms. (See: rc://en/ta/man/jit/translate-numbers and rc://en/ta/man/jit/translate-bweight)