'Thread' in the Bible

This is the law about the leper's disease in the thread of wool or linen material, in clothing or in anything of skin, saying how it is to be judged clean or unclean.

If he has been healed, then the priest is to command that two live and clean birds, some cedar wood, some crimson thread, and hyssop be brought for the one cleansed.

He is to take the live bird, the cedar wood, the crimson thread, and the hyssop, and dip them together in the blood of the bird that had been slaughtered over the flowing water.

And he shall take two birds and {cedar wood} and a {crimson thread} and hyssop to cleanse the house;

Then he shall take the {cedar wood} and the hyssop and {the crimson thread} and the living bird, and he shall dip them in the slaughtered bird's blood and in the fresh water, and he shall spatter [them] on the house seven times.

He is to clean the house with the blood of the bird over flowing water, including cleansing the live bird, the cedar wood, the hyssop, and the crimson thread.