Treasury of Scripture Knowledge

Summary

This they shall give, every one that passeth among them that are numbered, half a shekel after the shekel of the sanctuary: (a shekel is twenty gerahs:) an half shekel shall be the offering of the LORD.

Bible References

A shekel is

Leviticus 27:25
All values will be set using the standard weight of the holy place.
Numbers 3:47
It will cost you two ounces of silver per person, using the standard weight of the holy place, to buy them back.
Ezekiel 45:12
One shekel must weigh twenty gerahs. One mina must weigh sixty shekels.'