Albert Barnes Commentary Judges 14:12

"And Samson said unto them, Let me now put forth a riddle unto you: if ye can declare it unto me within the seven days of the feast, and find it out, then I will give you thirty linen garments and thirty changes of raiment;" — Judges 14:12 (ASV)

See the marginal references. Riddles formed one of the amusements of these protracted feasts.

Sheets: Rather “linen shirts;” the “garments” which follow are the outward garments worn by people from the East.