Exodus 30:10-12

New International Version - UK

¹⁰ Once a year Aaron shall make atonement on its horns. This annual atonement must be made with the blood of the atoning sin offering^[a] for the generations to come. It is most holy to the Lord.’

Atonement money

¹¹ Then the Lord said to Moses, ¹² ‘When you take a census of the Israelites to count them, each one must pay the Lord a ransom for his life at the time he is counted. Then no plague will come on them when you number them.