Leviticus 23:16-17, 20

Count off fifty days up to the day after the seventh Sabbath, and then present an offering of new grain to the LORD. From wherever you live, bring two loaves made of two-tenths of an ephah of the finest flour, baked with yeast, as a wave offering of firstfruits to the LORD.

The priest is to wave the two lambs before the LORD as a wave offering, together with the bread of the firstfruits. They are a sacred offering to the LORD for the priest.