Leviticus 23:1

1 And the Yahuah spake unto Moses, saying,

2 Speak unto the children of Israel, and say unto them, the feasts of the Yahuah, which ye shall proclaim holy convocations, these my feasts.

3 Six days shall work be done: but the seventh day the sabbath of rest, an holy convocation; ye shall do no work : it the sabbath of the Yahuah in all your dwellings.