Exodus 30:13
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:) a half shekel shall be the offering of the LORD.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:) a half shekel shall be the offering of the LORD.