Shavuot begins this Evening at Sundown

Leviticus 23

Shavuot

¹⁵ And from the morrow after the Sabbath, from the day that you brought the sheaf of the wave offering, you shall count for yourselves: seven  completed Sabbaths:

¹⁶ Until the morrow after the seventh Sabbath you shall number fifty days; and you shall offer a new grain offering unto  יְהֹוָה .

¹⁷ You shall bring out of your habitations two wave loaves of two tenths of an ephah; they shall be of fine flour; they shall be baked with leaven; they are the firstfruits unto  יְהֹוָה .

¹⁸ And you shall offer with the bread seven lambs without blemish of the first year, and one young bullock, and two rams: they shall be for a burnt offering to  יְהֹוָה , with their meat offering, and their drink offerings, even an offering made by fire, of sweet savour unto  יְהֹוָה .

¹⁹ Then you shall sacrifice one kid of the goats for a sin offering, and two lambs of the first year for a sacrifice of peace offerings.

²⁰ And the priest shall wave them with the bread of the firstfruits for a wave offering before יְהֹוָה , with the two lambs: they shall be set-apart to  יְהֹוָה  for the priest.

²¹ And you shall proclaim on the same day, that it may be a dedicated assembly for you: you shall do no servile work therein: it shall be a statute for ever in all your dwellings throughout your generations.