Leviticus 23:6-8

YLT(i) 6 and on the fifteenth day of this month is the feast of unleavened things to Jehovah; seven days unleavened things ye do eat; 7 on the first day ye have a holy convocation, ye do no servile work; 8 and ye have brought near a fire-offering to Jehovah seven days; in the seventh day is a holy convocation; ye do no servile work.'