Judges 14:12-13

12Samson said to them, “Let me tell you a riddle. If you solve my riddle during these seven days of the celebration, I will give you thirty fine linen robes and thirty sets of festive clothing.

13But if you can’t solve it, then you must give me thirty fine linen robes and thirty sets of festive clothing.” “All right,” they agreed, “let’s hear your riddle.”