Exodus 30:13 defines the shekel as twenty gerahs, the same standard Ezekiel 45:12 prescribes for the sanctuary.

Leviticus 27:25 repeats the shekel of twenty gerahs, confirming the sanctuary weight Ezekiel adopts.

Numbers 3:47 also states the shekel is twenty gerahs, reinforcing the standard Ezekiel 45:12 uses.

Numbers 18:16 establishes the same standard: the shekel is twenty gerahs, which Ezekiel 45:12 uses for its system of weights.