A riddle, i.e. an obscure sentence for you to resolve and explain. The seven days of the feast; for so long marriage-feasts lasted. See Genesis 29:27. Thirty sheets; fine linen clothes, which were used for many purposes in those parts. See Matthew 27:59 Mark 14:51. Thirty change of garments, i.e. changeable suits of apparel, as below, Judges 14:19 Genesis 45:22.
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: