Leviticus 23:34-36

Leeser(i) 34 Speak unto the children of Israel, saying, On the fifteenth day of this seventh month, shall be the feast of tabernacles for seven days unto the Lord. 35 On the first day shall be a holy convocation; no servile work shall ye do. 36 Seven days shall ye offer an offering made by fire unto the Lord: on the eighth day shall be a holy convocation unto you; and ye shall offer an offering made by fire unto the Lord, it is a solemn assembly; no servile work shall ye do.
Reformed Dating