Leviticus 23:8

But you shall present a food offering to the Lord for seven days . On the seventh day is a holy convocation ; you shall not do any ordinary work .

For seven days present a food offering to the Lord. And on the seventh day hold a sacred assembly and do no regular work.`”

But ye shall offer an offering made by fire unto the Lord seven days : in the seventh day is an holy convocation : ye shall do no servile work therein .