Exo Exodus, chapter Book of Exodus, chapter 30
They shall give this, everyone who passes over to those who are counted, half a shekel according to the shekel30:13 A shekel is about 10 grams or about 0.35 ounces. of the sanctuary (the shekel is twenty gerahs30:13 a gerah is about 0.5 grams or about 7.7 grains); half a shekel for an offering to Yahweh. Lev 27:25; Num 3:47; Ezk 45:12