Exodus 30:10–16

¹⁰Once a year Aaron must make peace with the Lord by putting blood on its horns. Once a year—for generations to come—blood from the offering must be placed on the altar to make peace with the Lord. It is most holy to the Lord.” 

Counting the Israelites

¹¹Then the Lord said to Moses, ¹²“When you take a census of the Israelites, each person must pay the Lord a ransom for his life when he is counted. Then no plague will happen to them when they are counted. ¹³As each person is counted, he must give one-fifth of an ounce of silver using the standard weight of the holy place.^aThis one-fifth of an ounce of silver is a contribution to the Lord. ¹⁴Everyone counted who is at least 20 years old must give this contribution to the Lord. ¹⁵The rich must not give more than one-fifth of an ounce of silver, and the poor must not give less. This contribution is given to make peace with the Lord and make your lives acceptable to the Lord. ¹⁶Take the money the Israelites give to make peace with the Lord, and use it to pay the expenses of the tent of meeting. It will be a reminder for the Israelites in the Lord’s presence that the sins in their lives are removed.”