Numbers 28:14-18

And their drink offerings shall be half an hin of wine unto a bullock, and the third part of an hin unto a ram, and a fourth part of an hin unto a lamb: this is the burnt offering of every month throughout the months of the year.

And one kid of the goats for a sin offering unto the LORD shall be offered, beside the continual burnt offering, and his drink offering.

And in the fourteenth day of the first month is the passover of the LORD.

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

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