'Shekel' in the Bible

And this is what they are to give; let every man who is numbered give half a shekel, by the scale of the holy place: (the shekel being valued at twenty gerahs:) this money is an offering to the Lord.

The man of wealth is to give no more and the poor man no less than the half-shekel of silver, when the offering is made to the Lord as the price for your lives.

A beka, that is, half a shekel by the holy scale, for everyone who was numbered; there were six hundred and three thousand, five hundred and fifty men of twenty years old and over.