Numbers 28:18 in the King James Version
In the first day shall be an holy convocation; ye shall do no manner of servile work therein:
Context
17 On the fifteenth day of this month shall be a feast. Unleavened bread shall be eaten for seven days.
18 In the first day shall be a holy convocation. You shall do no regular work,
19 but you shall offer an offering made by fire, a burnt offering to the LORD: two young bulls, one ram, and seven male lambs a year old. They shall be without defect,