Verse 18

On the first day there is to be a holy meeting: you may do no sort of field-work:

Referenced Verses

• Exod 12:16 : 16 And on the first day there is to be a holy meeting and on the seventh day a holy meeting; no sort of work may be done on those days but only to make ready what is necessary for everyone's food.
• Lev 23:7-8 : 7 On the first day you will have a holy meeting; you may do no sort of field-work. 8 And every day for seven days you will give a burned offering to the Lord; and on the seventh day there will be a holy meeting; you may do no field-work.