Leviticus 23:15-21

‘You shall count from the day after the Sabbath, from the day when you brought in the sheaf (tied bundle of grain) of the wave offering; there shall be seven complete Sabbaths (seven full weeks). You shall count fifty days to the day after the seventh Sabbath; then you shall present a new grain offering to the LORD. You shall bring in from your places two loaves of bread as a wave offering, made from two-tenths of an ephah of fine flour; they shall be baked with leaven as first fruits to the LORD. And you shall offer with the bread seven unblemished lambs, one year old, and one young bull and two rams. They are to be a burnt offering to the LORD, with their grain offering and their drink offerings. It is an offering by fire, a sweet and soothing aroma to the LORD. And you shall sacrifice one male goat as a sin offering and two male lambs, one year old as a sacrifice of peace offerings. The priest shall wave them before the LORD as a wave offering, together with the bread of the first fruits and the two lambs. They are to be holy to the LORD for the priest. On this same day you shall make a proclamation, you are to have a holy convocation (calling together); you shall not do any laborious work [on that day]. It is to be a permanent statute throughout your generations wherever you may be.