Exodus 30:12-16

12“When you take a census of the Israelites to register them, each of the men must pay a ransom for his life to the Lord as they are registered. Then no plague will come on them as they are registered.

13Everyone who is registered must pay half a shekel according to the sanctuary shekel (twenty gerahs to the shekel). This half shekel is a contribution to the Lord.

14Each man who is registered, twenty years old or more, must give this contribution to the Lord.

15The wealthy may not give more and the poor may not give less than half a shekel when giving the contribution to the Lord to atone for your lives.

16Take the atonement price from the Israelites and use it for the service of the tent of meeting. It will serve as a reminder for the Israelites before the Lord to atone for your lives.”