'Case' in the Bible

Behold, six men came from the direction of the upper gate which faces north, each with his shattering weapon in his hand; and among them was a certain man clothed in linen with a writing case at his loins. And they went in and stood beside the bronze altar.

Then the glory that is Israel's God arose from the cherubim on which he had been seated and settled on the threshold of the Temple. He called out to the man dressed in linen who wore the writing case at his side.

Then I noticed the man dressed in linen who wore the writing case by his side as he brought back this message: "I've done as you have commanded me."

“In a dispute, they will officiate as judges and decide the case according to My ordinances. They must observe My laws and statutes regarding all My appointed festivals, and keep My Sabbaths holy.

They are not to come in contact with a dead body, so they don't defile themselves, except in the case of their father, mother, son, daughter, brother, or for an unmarried sister, on whose behalf they may defile themselves.