Numbers 28:16-22

16And in the fourteenth day of the first month is the passover of the Lord.

17And in the fifteenth day of this month is the feast: seven days shall unleavened bread be eaten.

18In the first day shall be an holy convocation; ye shall do no manner of servile work therein:

19But ye shall offer a sacrifice made by fire for a burnt offering unto the Lord; two young bullocks, and one ram, and seven lambs of the first year: they shall be unto you without blemish:

20And their meat offering shall be of flour mingled with oil: three tenth deals shall ye offer for a bullock, and two tenth deals for a ram;

21A several tenth deal shalt thou offer for every lamb, throughout the seven lambs:

22And one goat for a sin offering, to make an atonement for you.