Judges 14:12-13

12And Samson said to them, I will now tell a riddle to 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 sheets and thirty change of garments:1 13But if ye cannot declare it to me, then shall ye give me thirty sheets and thirty change of garments. And they said to him, Tell thy riddle, that we may hear it.2