Leviticus 4:15

13“‘If the whole congregation of Israel sins, and the thing is hidden from the eyes of the assembly, and they have done any of the things which the LORD has commanded not to be done, and are guilty;

14when the sin in which they have sinned is known, then the assembly shall offer a young bull for a sin offering, and bring it before the Tent of Meeting.

15The elders of the congregation shall lay their hands on the head of the bull before the LORD; and the bull shall be killed before the LORD.

16The anointed priest shall bring some of the blood of the bull to the Tent of Meeting.

17The priest shall dip his finger in the blood and sprinkle it seven times before the LORD, before the veil.