Exodus 30:14

10 Once a year Aaron shall make atonement on the horns of the altar. Throughout your generations he shall make atonement on it annually with the blood of the sin offering of atonement. The altar is most holy to the LORD.”

11 Then the LORD said to Moses,

12 “When you take a census of the Israelites to number them, each man must pay the LORD a ransom for his life when he is counted. Then no plague will come upon them when they are numbered.

13 Everyone who crosses over to those counted must pay a half shekel, according to the sanctuary shekel, which weighs twenty gerahs. This half shekel is an offering to the LORD.

14 Everyone twenty years of age or older who crosses over must give this offering to the LORD.

15 In making the offering to the LORD to atone for your lives, the rich shall not give more than a half shekel, nor shall the poor give less.

16 Take the atonement money from the Israelites and use it for the service of the Tent of Meeting. It will serve as a memorial for the Israelites before the LORD to make atonement for your lives.”

17 And the LORD said to Moses,

18 “You are to make a bronze basin with a bronze stand for washing. Set it between the Tent of Meeting and the altar, and put water in it,

Read all of Exodus 30