Seven days — For so long marriage — feasts lasted. Sheets — Fine linen — clothes, which were used for many purposes in those parts. Changes — Suits of apparel.
Related Commentaries of Judges 14:12
Judges 14:12
12 And Samson said unto them, I will now put forth a riddle unto you: if ye can certainly declare it me within the seven days of the feast, and find it out, then I will give you thirty sheetsb and thirty change of garments: