'Festal' in the Bible

"You must not offer the blood of my sacrifice with bread containing yeast; the fat of my festal sacrifice must not remain until morning.

And Samson said to them, "Let me now put a riddle to you; if you can tell me what it is, within the seven days of the feast, and find it out, then I will give you thirty linen garments and thirty festal garments;

but if you cannot tell me what it is, then you shall give me thirty linen garments and thirty festal garments." And they said to him, "Put your riddle, that we may hear it."

And the Spirit of the LORD came mightily upon him, and he went down to Ash'kelon and killed thirty men of the town, and took their spoil and gave the festal garments to those who had told the riddle. In hot anger he went back to his father's house.

Yahweh is God, and he has given us light. Bind [the] festal sacrifice with cords to the horns of the altar.

festal robes, outer tunics, cloaks, money purses,

“I will also put an end to all her gaiety,Her feasts, her new moons, her sabbathsAnd all her festal assemblies.

He spoke and said to those who were standing before him, saying, “Remove the filthy garments from him.” Again he said to him, “See, I have taken your iniquity away from you and will clothe you with festal robes.”

But you have come to Mount Zion and to the city of the living God, the heavenly Jerusalem, and to myriads of angels [in festive gathering],

to the great festal gathering and Church of the first-born, whose names are recorded in Heaven, and to a Judge who is God of all, and to the spirits of righteous men made perfect,