Numbers 28:16-19

‘The LORD’S Passover shall be on the fourteenth day of the first month [of each year]. There shall be a feast on the fifteenth day of this month; unleavened bread shall be eaten for seven days. On the first day there shall be a holy [summoned] assembly; you shall do no laborious work that day. But you shall present an offering by fire, a burnt offering to the LORD: two bulls, one ram, and seven male lambs one year old, without blemish.