You must celebrate the Festival of Temporary Shelters ¹  for seven days, at the time of the grain and grape harvest. ² 

“You are also to observe ¹  the Feast of Harvest, the firstfruits of your labors that you have sown in the field, and the Feast of Ingathering at the end of the year ²  when you have gathered in ³  your harvest ⁴  out of the field.