'Festal' in the Bible

And Samson said to them, "Let me tell you a riddle. If you can fully explain it to me within the seven days of the feast, and find [it out], I will give to you thirty linen garments and thirty festal garments.

But if you are unable to explain it to me, you must give me thirty linen garments and thirty festal garments." So they said to him, "Tell your riddle; let us hear it."

And the Spirit of Yahweh rushed on him, and he went down to Ashkelon. He killed thirty men from them, and he took their belongings, and he gave festal garments to the ones that explained the riddle. {He was angry}, and he went up to his father's house.